土建专业常用英文词汇回填;回填土backfill回填物料backfillmaterial逆火back-fire本底噪声;背景噪声backgroundnoise垫板;背板backingplate后勤地区;辅助埸地back-uparea隔板;挡板baffle遮挡板baffleplate遮挡墙bafflewall调节池;均衡槽balancetank平衡锤balanceweight平衡载重balancedload平冲器balancer平衡水管balancingpipeline露台balcony滚珠轴承ballbearing浮球阀;球形阀;波阀ballvalve球窝接头ball-and-socketjoint道碴ballast竹枝棚架bambooscaffolding带式制动器bandbrake带夹bandclamp尖啸警报bansheealarm铁枝;杆;巴(压力量单位)bar钢筋bartendon驳运地点bargingarea营房barrack管筒;芯管barrel方形桩barrette路障;障碍物barricade栏栅;护栏;障碍物;屏障barrier路障barrierblock路闸barriergate阻挡板barrierplate基座base路面下层;承重层;路基层basecourse基架baseframe基架绝缘器baseinsulator底板;垫板baseplate底部密封胶basesealing平底板baseslab底座支架basesupport基线;底线;基准线baseline基线计划baselineprogramme地库;地窖;地下室basement混凝土混和机;配料厂batchingplant斜桩batterpile蓄电池battery电池酸位batteryacidlevel蓄电池电压batterycellvolt电池充电器batterycharger电力机车b