备用

back file

备用文件

back fence 后篱笆 | back file 备用文件 | back fill 后面充填物

Back-up light

备用小灯

腕上型指北针 wrist compass | 备用小灯 back-up light | 纯氧 oxygen

Back-up protection

备用保护装置

back up plate 推靠板 | back up protection 备用保护装置 | back up store 后备存储器

back-up area

备用堆置场

back up 垫板,背撑,(铸造用语)填背砂 | back up area 备用堆置场 | back up battery 后备电池

backup file

备用文件

backup diskette 后援软磁盘 | backup file 备用文件 | backup machine 后备机械

backup file

备用档

"备份资料","backup data" | "备用档","backup file" | "连锁倒推法","backward chaining"

backup light

备用灯

辅助频率 back-up frequency | 备用灯 backup light | 后备存储器 back-up memory

backup device

备用装置

backup copy 副本 | backup device 备用装置 | backup flooding 保持压力注水

bailout bottle

备用气瓶,跳伞用氧气瓶

bailout 应急跳伞,政府救助 | bailout bottle 备用气瓶,跳伞用氧气瓶 | bailout capsule 弹射座舱

banked boiler

热备用锅炉

master fader 主衰减器 | banked boiler 热备用锅炉 | received spectrum 接收信号谱

Hilt's law：希尔特煤品级定律

"hillside quarry","山坡石矿" | "Hilt's law","希尔特煤品级定律" | "hindered settling","阻流沈降"

Shaanxi Sunland Automatic Control Co.,Ltd：陕西神洲自动控制有限公司

SHAANXI QINCHUAN MACHINERY DEVELOPMENT CO.,LTD 陕西秦川机械发展股份有限公司 | Shaanxi Sunland Automatic Control Co.,Ltd 陕西神洲自动控制有限公司 | Shan Dong Shuang Yi Group Co.,Ltd 山东双一集团有限公...