?燃烧器嘴    burner tip

?毛口    burr

?光口机    burring machine

?迸裂    bursting

?迸裂压力    bursting pressure

?载重量    burthen

?双吊杆[联合]操作系统    burtoning system (or union purchase)

?总线    bus bar

?总线护道    bus duct

?轴衬,衬套    bush (or bushing)

?轴衬止[具]    bush stopper

?衬套    bushing

?肉库    butchery

?对接,对头    butt

?对接    butt joint

?对头电阻焊接    butt resistance welding

?对[头]铆[接]    butt riveting

?对[接]铆[接]    butt riveting

?对缝焊接    butt seam welding

?搭板    butt strap

?搭板对接    butt strap joint

?对接焊接    butt welding

?蝶形螺帽,元宝螺帽    butterfly nut

?蝶形阀    butterfly valve

?洗舱水加热器    butterworth heater

?洗舱孔    butterworth hole

?洗舱泵    butterworth pump

?艉部,船艉    buttock

?纵剖面线    buttock line

?纵剖面线    buttock lines

?圆头铆钉    button head rivet

?蜂鸣器    buzzer

?法国验船协会    BV (= Bureau Veritas, France)

?沸水式反应器    BWR (= boiling water reactor)

?旁通管    by pass pipe

?旁通旋塞    by path cock

?旁通因子    by path factor

?旁通管    by path pipe

?旁通阀    by path valve

?顶风航行    by the wind

?旁路,旁通    by-pass (or by path)

?旁通阀    by-pass (or bypath) valve