回填

alabaster

纯白生石膏

"Al reflow","铝回填" | "alabaster","纯白生石膏" | "alabaster glass","雪花玻璃"

arming mechanism

击发装置, 解脱保险装置

DOS 磁盘操作系统 | arming mechanism 击发装置, 解脱保险装置 | backing store [计]存储器回填,将存储备份

back draft

反向气流

back boiler 家用热水炉[装在壁炉背后,不占可见空间的小锅炉];备用煮水器 | back-draft 反向气流 | backfill 回填

Back-up protection

后备保护装置

back-up power 后备电源 | back-up protection 后备保护装置 | backfill 回填

backer board

背衬板

backbone 构架 | backer board 背衬板 | backfill 回填

backfire pot

滴液点火器

backfilling 回填 | backfire pot 滴液点火器 | backfire a.迎面火<在林野火灾前进的道路上放的火

Backfire bomber

逆火式"轰炸机

backfill material;回填材料;; | Backfire bomber;"逆火式"轰炸机;; | background information;背景资料;;

backflow barrier

逆止阀

backfill compactor 回填土压实机 | backflow barrier 逆止阀 | background heating 背景供热

backflow connection

回流连接

"回填夯实机","Back-filling tamper" | "回流连接","Backflow connection" | "回流防止器","Backflow preventer"

backflush device

反冲器

backfilling bucket 斗式回填机 | backflush device 反冲器 | background camera 背景摄影机

Hydraulic sizer：水力筛分机

hydraulic setting refractory 水凝[性]耐火物 | Hydraulic sizer 水力筛分机 | hydraulicking 水掘法

roadside trees：街头树路树

rna splicing rna 剪接 | roadside trees 街头树路树 | roaring 咆哮