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故障相
 故障相
el. faulty phase
| 选择探测器
 选择探测器
mil., air.def. switch detector

to phrases
故障相
el. faulty phase
hydroel.st. fault phase
故障相
: 52 phrases in 7 subjects
Aviation2
Electric machinery7
Electricity generation3
Electronics29
Hydroelectric power stations5
Technology5
Telecommunications1