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oil tightness test | |||
oil tight test | |||
oil-pressure test for tightness; oil-tight test | |||
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oil test |
油密 试验 : 15 phrases in 8 subjects |
Aviation | 1 |
Chemistry | 1 |
Earth sciences | 2 |
Mechanics | 1 |
Nautical | 2 |
Oil processing plants | 1 |
Shipbuilding | 3 |
Technology | 4 |