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| knock; knock-pin | |||
| ejector pin; knock pin | |||
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| knock-pin | |||
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顶销 : 30 phrases in 7 subjects |
| Automobiles | 2 |
| Continuous casting | 2 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Plastics | 5 |
| Polymers | 5 |
| Technology | 13 |
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