首页 > Term: wark
wark
Eng. Black slaty stone overlying coal seams, Somerset Coalfields. Also spelled werk.
- 词性： noun
- 行业/领域： 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
0
创建者
- ed.young
-
(V.I.P) 21084 分数 - 100% positive feedback
(Milwaukee, United States)
