首页 > Term: measurement of concentration
measurement of concentration
Gr. Brit. At the National Coal Board collieries, in order to assess the degree of concentration, certain basic data are collected, involving the pithead output, length of main haulage roads, and length of coalface in production.
- 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
- 100% positive feedback
(Milwaukee, United States)