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| Y〔平行〕截割; 晶体 Y切割 | |||
| 平行炮孔掏槽掏槽的一种方式。与工作面成一定角度的钻孔为倾斜孔掏槽,20世纪40年代后期出现了垂直工作面的直孔掏槽，也称平行掏槽、平行空孔直线掏槽 | |||
| 平行挖掘; 平行截割; 平行切割; 直眼掏槽 | |||
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parallel cut : 10 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 4 |
| Technology | 6 |
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