?模宽,型宽 B (= breadth) moulded (Bmld)
?英热单位 B.T.U. (= British thermal unit)
?巴比合金,白合金 Babbitt metal
?巴比合金 Babbitt metal
?背面(螺桨) back
?背接角材 back (or backing) angle
?靠板 back board
?背肘板 back bracket
?[叶]背空蚀 back cavitation
?背缝凿净,背缝凿平 back chipping
?后柱 back column
?后端板 back end plate
?英热单位 B.T.U. (= British thermal unit)
?巴比合金,白合金 Babbitt metal
?巴比合金 Babbitt metal
?背面(螺桨) back
?背接角材 back (or backing) angle
?靠板 back board
?背肘板 back bracket
?[叶]背空蚀 back cavitation
?背缝凿净,背缝凿平 back chipping
?后柱 back column
?后端板 back end plate
?逆火,回火 back fire
?反向焊接 back hand welding
?后管集箱,后管头箱 back header
?里钩 back hook
?背材 back piece
?背板 back plate
?反压,背压 back pressure
?背压 back pressure
?背压涡轮机 back pressure turbine
?背压阀 back pressure valve
?后索(斜桅) back rope
?后支撑,后拉索 back stay
?后支杆,后拉索 back stay
?[后]退焊法 back step method
?[后]退焊顺序 back step sequence
?[后]退焊接 back step welding
?后管板 back tube plate
?回水 back water
?背垫焊接 back weld
?后柱(主机) back-column or back housing
?后退,靠背,支材 backing
?倒砗动力 backing (or astern) power
?背接角材 backing angle
?倒车操纵 backing maneuvers
?铆钉机,铆钉冲出机 backing out punch
?背焊道 backing pass
?靠板,背板 backing plate
?托圈,背圈 backing ring
?背托条(焊接) backing strap (or strip)
?齿隙,虚位,反撞 back-lash
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