Home > Term: 傑克孔
傑克孔
工程 煤礦開採，螺栓孔。
- Part of Speech: noun
- Industry/Domain: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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Creator
- Winnie
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(V.I.P) 58130 points - 100% positive feedback
(China)
