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jamb stick
A device used in faceting gems; a piece of wood containing a series of holes into which a dop stick (gem stick) can be fixed at various angles, thus regulating the angle of the facet being cut.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
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创建者
- ed.young
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(Milwaukee, United States)