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顶部驱动
 顶部驱动
oil top drive
| 系统
 DPA系统
pest.contr. DPA System
 F系统
rem.sens. F system
 PELV系统
el.mach. PELV system
 SELV系统
el.mach. SELV system
 TN 系统
IT TN system
 TN-C 系统
IT TN-C system
 TN-C-S 系统
IT TN-C-S system
 TN-S 系统
IT TN-S system
 系统
tech. system

to phrases
顶部驱动 dǐngbù qūdòng
oil top drive
顶部驱动: 25 phrases in 8 subjects
Chemistry1
Drilling14
Earth sciences1
Mechanics1
Nautical1
Nuclear and fusion power1
Oil / petroleum5
Technology1