查询词典 back up

back-to-back angle：双角摇杆背贴角钢

back-step 逐步退焊 | back-to-back angle 双角摇杆背贴角钢 | back-to-back coupling 背面耦合

back-up air tank：备用气箱

back-up air supply 备用空气源 | back-up air tank 备用气箱 | back-up cooling 备用冷却

Back-up protection：后备保护

61 Back-up over-speed governor 附加超速保护装置 | 62 Back-up protection 后备保护 | 63 Back-up ssystem 后备继电保护

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

back-up safety device：备用安全装置

back up protection 后备保护 | back up safety device 备用安全装置 | back up supply 备用电源

back-up safety device：后备安全设备

后备继电保护 back-up relaying | 后备安全设备 back-up safety device | 后备电源 back-up source

back-up safety device：备用安全设备,备用安全装置

back-up roll | 支撑轧辊,支撑辊 | back-up safety device | 备用安全设备,备用安全装置 | back-up source | 后备电源,备用电源

back to back method：反馈法

back span 反向间隔 | back to back method 反馈法 | back up protection 后备保护

back to back houses：背对背房屋

back surge 逆哩 | back to back houses 背对背房屋 | back up block 支撑块

at sb.'s disposal; in sb's disposal：任某人处理

at rest 宁静的,安静的,过世了的 | at sb.'s disposal; in sb's disposal 任某人处理 | at sb's service 听某人吩咐

Unionism：工会主义;工联主义

Unionist:工会主义者 | Unionism: 工会主义;工联主义 | Unitive:团结的,倾向于团结的