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breaking of vacuum | |||
vacuum break | |||
vacuum cracking | |||
vacuum breaking |
真空破 坏 : 15 phrases in 8 subjects |
Automobiles | 1 |
Aviation | 1 |
Electric machinery | 2 |
Electronics | 2 |
Hydroelectric power stations | 1 |
Nautical | 1 |
Nuclear and fusion power | 1 |
Technology | 6 |