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水准检测; 校验水平 | |||
料位检测; 电平检验 |
level check : 21 phrases in 10 subjects |
Agriculture | 1 |
Automobiles | 5 |
Drilling | 1 |
Economics | 2 |
Electronics | 2 |
Engineering geology | 1 |
Hydroelectric power stations | 1 |
Information technology | 2 |
Oil / petroleum | 2 |
Technology | 4 |