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| 单 V 形沟 | |||
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| 单面 V 形坡口 | |||
| 单面V形坡口 | |||
| 单V形坡口; 单V形槽 | |||
| 单式 V 形槽 | |||
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single v-groove : 4 phrases in 2 subjects |
| Metallurgy | 2 |
| Technology | 2 |
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