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prevention of accidents | |||
accident prevention | |||
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prevention of accidents | |||
fault prevention | |||
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prevention of accidents |
故障 预 防 : 9 phrases in 6 subjects |
Architecture | 1 |
Automobiles | 1 |
Earth sciences | 1 |
General | 1 |
Hydroelectric power stations | 2 |
Technology | 3 |