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| Backstein | (red) brick | brique f. | mattone | ladrillo |  | 
| Bagger (Hydraulik-) (m)  | Hydraulic excavator | Pelle hydraulique (f) | Escavatori idraulici   | Excavadora hidráulica (f) |  | 
| Bagger (Mini) (m)  | Mini-excavator  | Mini-pelle mécanique (f)  | Miniescavatore (m)  | Miniexcavadora (f)  |  | 
| Bakelit (nt)  | Bakelite  | Backélite (f)  | Bachelite (f)  | Baquelita (f)  |  | 
| Bakterien (f.pl) | Bacteria  | Bactéries (f.pl)  | Batteri (m.pl)  | Bacterias (f.pl) |  | 
| Baldachin (m)  | Balaquin  | Baldaquin (m)  | Baldacchino (m)  | Baldaquín (m)  |  | 
| Balken (m)  | Beam / Joist  | Poutre (f) | Trave (f) | Viga (f) |  | 
| Balkendecke (f) | beam floor / joist ceiling / single floor / span ceiling | plafond (m) de barre (f) | soffitto (m) di barra (f) | cobertura (f) de viga (f) |  | 
| Balkon | balcony | balcon m. | balcone m. | balcon m. |  | 
| Ballen  (m) (Shellackpolitur) | Fad (french polish) | Tampon (m) | Tampone (m) | Muñequilla (f) |  | 
| Balsaholz (nt)  | Balsa wood  | Balsa (m)  | Balsa (f)  | Madera balsa (f)  |  | 
| Balsam (m)  | Balm | Baume (m)  | Balsamo (m)  | Bálsamo (m)  |  | 
| Balsamterpentinöl (nt)  | Oil of turpentine  | Térébenthine (f)  | Trementina (f)  | Aguarrás (m)  |  | 
| Band | strip, band | Band | Band | Band |  | 
| Banddurchzug |  |  |  |  |  | 
| Bandelwerk (nt) | Baroque strapwork  | Garniture de volutes (f)  | Guarnizione barocca alle volute (f)  | Lacería (f)  |  | 
| Bandfries |  |  |  |  |  | 
| Barbakane |  | barbacane f. |  |  |  | 
| Bariumgelb (nt)  | Barium yellow | Jaune de baryum (m)  | Giallo di barite (m)  | Amarillo de bario (m)  |  | 
| Bariumsulfat (nt) / Blanc fix (nt)  | Barium sulfate | Sulfate de baryum (m)  | Solfato di bario (m)  | Sulfato de bario (m)  |  | 
| Barock (nt) | Baroque  | Baroque (m)  | Barocco (m) | Barocco (m)  |  | 
| Basis | foundation | base | basamento | basa  |  | 
| Bast (m)  | Bast  | Raphia (m)  | Rafia (f)  | Ráfia (f)  |  | 
| Bastion (f)  | Bastion / Stronghold | bastion | bastione | bastion |  | 
| Bauholz (nt)  | Timber | Bois de charpente (m)  | Legname da costruzione (m)  | Madera labrada (f)  |  | 
| Baum (m)  | Tree | Arbre (m)  | Albero (m)  | árbol (m)  |  | 
| Baumkrone (f)  | Treetop | Cime d'arbre (f)  | Corona dell'albero (f)  | Copa del árbol (f)  |  | 
| Baumrinde (f)  | Bark  | Écorce d'arbre (f)  | Corteccia (f)  | Corteza de árbol (f)  |  | 
| Baumstamm (m)  | Trunk (tree trunk)  | Tronc d'arbre (f)  | Tronco (m)  | Tronco (m)  |  | 
| Baumwolle (f)  | Cotton  | Coton (m)  | Cottone (m)  | Algodón (m)  |  | 
| Bauvisier (nt) / Provisorische Baugespanne (pl.)  | Provisional building profiles/markers  | Gabarits provioires (pl.) | Modinature e tracciamenti provvisori (pl.) |  |  | 
| Bauwerksabdichtung (f)  | Structural waterproofing / Waterproofing of buildings  / Building sealing | Imperméabilisation des bâtiments (f)  | Impermeabilizzazione di edifici | Sellado de edificios (m) |  | 
| Bayerischblau (nt)  | Bavarian blue  | Bleu de Bavière (m)  | Blu bavarese (m)  | Azul de Baviera (m)  |  | 
| Becherglas (nt)  | Beaker  | Bécher (m)  | Becher (m) | Vaso (m)  |  | 
| Bedienung (f) (eines Gerätes)  | Use / Operation  | Utilisation (f) | Uso (m)  | Manejo (m)  |  | 
| Befall (m)  | Infestation  | Infestation (f)  | Infestazione (f)  | Infestación (f) |  | 
| Befestigung (f)  | Attachment  | Fixation (f)  | Fissago (m)  | Fijación (f)  |  | 
| Befeuchtungsgerät (nt)  | Humidifier  | Humidificateur (m)  | Umidificatore (m)  | Humidificador (m)  |  | 
| Begasung (f)  | Fumigation  | Désinfection au gaz (f)  | Trattamento con camera a gas (m)  | Gaseado (m)  |  | 
| Begasungsmittel (nt)  | Fumigant  | Agent de fumigation (m)  | Mezzo di fumigazione (m)  | Agente de fumigación (m)  |  | 
| Behandlung (f)  | Treatment  | Traitement (m)  | Trattamento (m)  | Tratamiento (m)  |  | 
| Beil (nt) | Hatchet | Hache (f) | Accetta (f)  | Hacha (m) |  | 
| Beinschwarz (nt) / Elfenbeinschwarz (nt)  | Ivory black  | Noir d'ivoire (m)  | Nero d'avorio (m)  | Negro de marfil (m)  |  | 
| Beize (f) / Beizenfarbstoff (m)  | Stain  | Teinture (f)  | Mordente (m)  | Mordente (m) / Colorante que requiere mordente (f)  |  | 
| Beizeisen |  |  |  |  |  | 
| Beleuchtung (f)  | Illumination / Lighting  | Éclairage (m)  | Illuminazione (f)  | Iluminación (f)  |  | 
| Belüftung (f)  | Ventilation  | Aération (f)  | Ventilazione (f)  | Ventilación (f)  |  | 
| Benzen (nt)  | Benzene  | Benzéne | Benzene | Benceno  |  | 
| Benzin (nt)  | Gasoline / Petrol  | Essence (f)  | Benzina (f)  | Gasolina (f)  |  | 
| Benzoeharz (nt)  | Benzoe / Styrax resin  | Benjoin (m)  | Resina di benzoino (f)  | Benjuí (m)  |  | 
| Benzotriazol (BTA) (nt)  | Benzotriazole  | Benzotriazole (m)  | Benzotriazolo (m)  | Benzotriazol (m)  |  | 
| Berberitzen-Extrakt (m) / Berberin (nt)  | Barberry extract / Berberine  | Extrait d'épine-vinette (m)  | Estratto di crespino (m)  | Extracto de berberis (m)  |  | 
| Bereich (m)  | Area | Endroit (m)  | Ambito (m)  | ámbito (m)  |  | 
| Bergblau (nt) / Azurblau (nt)  | Mountain blue / Azure | Azur (m)  | Azzurro (m)  | Azur (m)  |  | 
| Bergfried (m)  | keep | donjon (m) | battifredo (m) | torre del homenaje |  | 
| Berggrün (nt)  | Mountain green  | Vert de montagne (m)  | Verde di montagna (m)  | Verde de las montañas (m)  |  | 
| Berliner Blau (nt)  | Berlin blue  | Bleu de Berlin (m)  | Blu di Berlino (m)  | Azul de Berlín (m)  |  | 
| Bernstein (m)  | Amber | Ambre juane (m)  | Ambra (f)  | ámbar (m)  |  | 
| Beryll (m)  | Beryl  | Béryl (m)  | Berillo (m)  | Berilio (m)  |  | 
| Beschallung (f) | Acoustic irradiation  | Sonorisation (f)  | Sonorizzazione (f)  | Sonorización (f)  |  | 
| Beschlagwerk (nt)  | Slapwork  | Ferrures (f.pl)  | Decorazione che imita lo sbalzo (f)  | Ornamentación de correas tejidas (f)  |  | 
| Beschleunigungs-Massenspektrometrie (f)  | Accelerator mass spectrometry (AMS)  | Spectrométrie de masse par accélérateur (f)  | Spettrometria di massa con acceleratore (f)  | Espectrometría de aceleración de masas (f)  |  | 
| Beständigkeit (f)  | Resistance | Résistance (f)  | Resistenza (f)  | Resistencia (f)  |  | 
| Beton (m)  | Concrete  | Béton (m)  | Cemento (m)  | Concreto (m)  |  | 
| Betonaufbau in Rundformen |  |  |  |  |  | 
| Betonbalkendecke (f) | concrete beam floor / joist ceiling / single floor / span ceiling | plafond (m) de barre (f) en béton (m) | soffitto (m) di barra (f) da calcestruzzo | cobertura (f) de viga (f) en concreto (m) |  | 
| Betondecke | concrete ceiling  | plafond au béton | copertura in calcestruzzo | firme de hormigón |  | 
| Betonlamellen |  |  |  |  |  | 
| Betonziegel |  |  |  |  |  | 
| Betrachter (m)  | Spectator / Beholder  | Spectateur (m)  | Spettatore (m)  | Espectador (m)  |  | 
| Betrieb (m)  | Operation / Enterprise / Company / Business / Plant | Fonctionnement (m) / Entreprise (f) / Exploitation (f)  | Operazione (f) / Azione (f) / Funzionamento (m) | Funcionamiento (m) / Empresa (f) / Servicio (m)  | Funcionamento (m) / Empresa (f) / Serviço (m)  | 
| Beugung (f)  | Diffraction  | Diffraction (f)  | Diffrazione (f)  | Difracción (f)  |  | 
| Beulen)  (v) , ausbilden (Risse | form  | former  | formare  | formar  |  | 
| Bewehrung horizontal | horizontal armoring | armature horizontale | armatura orizzontale | armadura horizontal |  | 
| Bewehrung vertikal | vertical armoring | armature verticale | armatura verticale | armadura vertical |  | 
| Beweis (m)  | Evidence  | Preuve (f)  | Evidenza (f)  | Prueba (f) |  | 
| Bezugstoff (m) / Polsterstoff (m)  | Cover fabric / Covering / Upholstery  | Housse (f) / Tissu de revêtement | Ricoperta di stoffa (f)  | Funda (f) / Tejido de cubierta |  | 
| Biberschwanzziegel | plain tile | tuile plate |  | teja plana |  | 
| Biedermeierstil (nt)  | Biedermeier style  | Biedermeier (m)  | Stile Biedermeier (m)  | Estilo Biedermeier (m)  |  | 
| Bienenwachs (nt)  | Beeswax | Cire d'abeille (f)  | Cera d'api (f)  | Cera de abeja (f)  |  | 
| Bild (nt) | Picture  | Image (f) | Imagine (f)  | Cuadro (m)  |  | 
| Bilderfirnis (m) | Picture varnish  | Vernis de peinture (m)  | Vernice dipinti (f)  | Barniz (m) (para pinturas)  |  | 
| Bildhauer (m)  | Sculptor  | Sculpteur (m)  | Scultore (m)  | Escultor (m)  |  | 
| Bildnis (nt) | Portrait  | Portrait (m)  | Ritratto (m)  | Retrato (m)  |  | 
| Bildträger (m)  | Image carrier  | Support (m)  | Sopporto (m)  | Soporte (m) |  | 
| Bimsmehl (nt)  | Pumice powder  | Pierre ponce moulue (f)  | Pomice (f)  | Polvo de piedra pómez (m)  |  | 
| Bimsstein (m)  | Pumice stone  | Pierre ponce (f) | Pietra pomice (f)  | Piedra pómez (f)  |  | 
| Bindemittel (nt)  | Binder  | Liant (m)  | Legante (m)  | Aglutinate (m)  |  | 
| Bindfaden (m)  | String  | Ficelle (f)  | Spago (m)  | Hilo (m)  |  | 
| Bindung (f)  | Binding / Cohesion  | Liaison (f)  | Legame (m)  | Cohesión (m)  |  | 
| Binokularmikroskop (nt) | Binocular microscope  | Microscope binoculaire (m)  | Microscopio biocolare (m)  | Microscopio binocular (m)  |  | 
| Biologe (m)  | Biologist  | Biologiste (m)  | Biologo (m)  | Biólogo (m)  |  | 
| Bioorganismen (m.pl)  | Biological organisms (pl)  | Organismes biologiques (m.pl)  | Organismi biologici (m.pl)  | Organismos biológicos (m.pl)  |  | 
| Birke (f) / Birkenholz (nt)  | Birch  | Bouleau (m) (Bois de bouleau, m)  | Betulla (Legno di betulla, m)  | Abedul (m) (Madera de abedul, f)  |  | 
| Birnbaum (m)  | Pear tree  | Poirier (m)  | Pero (m)  | Peral (m)  |  | 
| Bismut (n)  | Bismuth  | Bismuth (m)  | Bismuto (m)  | Bismuto (m)  |  | 
| Bister (m)  | Bistre  | Bistre (m)  | Bistro (m)  | Bistre (m)  |  | 
| Bitumen (nt)  | Bitumen  | Bitume (m)  | Bitume (m)  | Betún (m)  |  | 
| Blase (f)  | Bubble  | Bulle (f)  | Bolla (f)  | Burbuja (f)  |  | 
| Blasenbildung (f)  | Blistering  | Formation de bulles (f)  | Formazione di bolle (f)  | Formación de burbujas (f)  |  | 
| Blastzapfen (m ) | Blastpin | Sarbacane (f)  | Cannello (m)  | Cerbatana (f)  |  | 
| Blastzapfen am Rahm (m)  | Trunnion on the frame | Tourillon sur le cadre (m)  | Ancoraggio a cerniera sul telaio (m)  | Muñón en el marco (m)  |  | 
| Blattgold (nt)  | Gold leaf  | Feuille d'or (f)  | Foglia d'oro (f)  | Hoja de oro (f)  |  | 
| Blattstoss (m) / Gerades Blatt (nt)  | Halving joint / Half-lap scarf joint / Straight leaf joint / Straight leaf connection | Connexion à lame droite (f) / Joint de réduction de moitié (m)  | Attacco lama dritto (m) / Giunto di dimezzamento (m)  | Hoja recta (f)  |  | 
| Blech (nt)  | Sheet metal  | Tôle (f)  | Lamiera (f)  | Hojalata (f)  |  | 
| Blei (nt)  | Lead | Plomb (m)  | Piombo (m)  | Plomo (m)  |  | 
| Bleiglasfenster-Horizontalstab | Bleiglasfenster-Horizontalstab | Bleiglasfenster-Horizontalstab | Bleiglasfenster-Horizontalstab | Bleiglasfenster-Horizontalstab |  | 
| Bleilappen | lug of lead | abergements de plomb | lobo di piombo | Bleilappen |  | 
| Bleistift (m)  | Pencil  | Crayon (m)  | Matita (f)  | Lápiz (f)  |  | 
| Bleistreifen | stride of leadcover | bandes de plomb | striatura di biombo | Bleistreifen |  | 
| Blendrahmen | window frame / blind frame | châssis de fenêtre | telaio della finestra | precerco |  | 
| Blindholz (nt)  | Construction wood  | Contreplaqué (m)  | Compensato (m)  | Madera de baja calida que se usa ein lugares no visibles (f)  |  | 
| Blitzableiter | lightning conductor | paratonnerre m. | parafulmine m. | pararrayos |  | 
| Bogenbinder | Bogenbinder | Bogenbinder | Bogenbinder | Bogenbinder |  | 
| Bogennische mit Statue | Bogennische mit Statue | Bogennische mit Statue | Bogennische mit Statue | Bogennische mit Statue |  | 
| Bogenrücken | Bogenrücken | Bogenrücken | Bogenrücken | Bogenrücken |  | 
| Bohle (f)  | Plank  | Planche (f) | Pancone (m)  | Tablón (m) |  | 
| Bohrer mit Meisselschneide | borer | foreur / perceur | trapano | barrena / trépano con corte de cincel |  | 
| Bohrhammer (m)  | Rotary hammer / Hammer drill | Marteau perforateur (m)  | Martello perforatore (m)  | Martilla Perforador (m)  |  | 
| Boiler |  |  |  |  |  | 
| Bord | brim / shelf | bord | bordo | bordo |  | 
| Borke (f)  | Bark | Écorce (f) | Corteccia (f) | Corteza (f) |  | 
| Brandschutz (m)  | Fire protection  | Protection contre les incendies (f)  | Protezione antincendio (f)  | Protección contra incendios (f) |  | 
| Brazilholz (nt) / Fernambukholz (nt)  | Brazil wood | Pernambouc (m)  | Pernambuco (m)  | Pernambuco (m) |  | 
| Breite (f)  | Width  | Largeur (f) | Larghezza (f)  | Anchura (f)  |  | 
| Brett (nt) / Diele (f)  | Board / Plank | Planche (f)  | L'asse (f) / Tavola (f) | Sofito (m) / Tabla (f)  |  | 
| Brettchen (fest) (nt) | Slat / Small board, solid | Comprimé solide (m) | Compresse, solido | Comprimido sólido (m) |  | 
| Brettstapelelemente (n) | board pile elements | Brettstapelelemente (n) | Brettstapelelemente (n) | Brettstapelelemente (n) |  | 
| Briden (f) | Briden (f) | brides (f) | Briden (f) | Briden (f) |  | 
| Briden auf Holz | Briden auf Holz | Brides sur bois | Briden auf Holz | Briden auf Holz |  | 
| Briefkasten |  |  |  |  |  | 
| Bronze (f)  | Bronze | Bronze (f)  | Bronzo (m)  | Bronce (m)  |  | 
| Brustblech | Brustblech | Tablettes | Brustblech | Brustblech |  | 
| Brustzapfen (m)  | Trunnion | Tourillon (m)  | Orecchione | Muñón (m) |  | 
| Brüstung |  |  |  |  |  | 
| Brüstung, seitlich |  |  |  |  |  | 
| Brüstungsband |  |  |  |  |  | 
| Buche (f) / Buchenholz (nt)  | Beech | Hêtre (m) | Faggio (m)  | Haya (f) |  | 
| Bug |  |  |  |  |  | 
| Burg Küche (f)  | Castle Kitchen | Cuisine du château | Cucina del castello | Cocina del Castillo |  | 
| Burggraben | castle moat | fossé m. | fossato | foso del castillo |  | 
| Burghof (m) | Castle courtyard / Bailey | Cour du château (f) | Cortile del castello | Patio del castillo |  | 
| Bündelpfeiler | Bündelpfeiler | Bündelpfeiler | Bündelpfeiler | Bündelpfeiler |  | 
| Bürste (f)  | Brush  | Brosse (f) | Spazzola (f)  | Cepillo (m)  |  | 
| basisch (adj)  | basic | basique | basico  | básico  |  | 
| beeinflussen (v)  | influence | influencer  | influenzare | influir |  | 
| befallen (v)  | infest  | infester  | infestare  | infestar |  | 
| befestigen (v)  | attach  | attacher  | fissare | sujetar  |  | 
| begasen (v)  | fumigate | gazer  | trattare con gas (tarli) | gasear |  | 
| beimischen (v)  | add / mix | ajouter  | miscelare | añadir |  | 
| beizen (färben) (v)  | stain  | teinter  | tingere  | teñir |  | 
| beleuchten (v)  | illuminate | éclairer | illuminare | alumbrar |  | 
| belüften (v)  | ventilate | aérer | ventilare  | ventilar  |  | 
| beschleunigen  (v)  | accelerate | accélérer | accelerare | acelerar |  | 
| beschädigt (adj)  | damaged  | abîmé | danneggiato  | deteriorado  |  | 
| bestimmen / identifizieren (v)  | determine / define  | déterminer  | determinare  | determinar |  | 
| bestrahlen (v)  | irradiate / illuminate / shine on  | irradir  | irradiare  | irradiar  |  | 
| beständig (adj) | resistant  | résistant  | resistente | risistente  |  | 
| beurteilen (v)  | judge  | juger  | giudicare  | enjuiciar  |  | 
| beweglich (f), Führungsschiene | Guide rail, movable | Rail de guidage, mobile | Rotaia di guida, mobile | Carril guía, móvil (m) |  | 
| beweglich, Brettchen |  |  |  |  |  | 
| beweisen (v)  | prove  | prouver  | provare  | probar  |  | 
| biegen (v)  | bend | plier  | piegare | combar |  | 
| binden (v)  | bind  | lier  | legare  | ligar  |  | 
| biologisch (adj)  | biological  | biologique  | biologico  | biológico  |  | 
| biologisch abbaubar (adj) | biodegradable  | biodégradable  | biodegradabile  | biodegradable |  | 
| blank reiben (v)  | furbish  | faire briller | lucidare | pulir |  | 
| blasen bilden (v)  | bubble (form) | former des bulles  | fare le bolle  | formar burbujas  |  | 
| blass (adj)  | pale | pâle  | pallido  | pálido  |  | 
| brandfördernd (adj) | oxidizing | oxydation | ossidante | oxidante |  |