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预防性安全
| 措施
| 预防性安全 | |
| auto. | pre-safe |
| 措施 | |
| gen. | measures |
| bridg.constr. | provision |
| econ. | step |
| econ. int. law. | action |
| hydroel.st. | procedure |
| met. | countermeasure; means; move |
| tech. | measure |
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| pre-safe | |||
| 预防性安全: 1 phrase in 1 subject |
| Technology | 1 |
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