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| 射孔器 | |||
| 射孔枪【器】 | |||
| 子弹射孔器 | |||
| 射孔器 (深钻钻工具); 穿孔器 (油井) | |||
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gun perforator : 3 phrases in 2 subjects |
| Oil / petroleum | 2 |
| Technology | 1 |
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