首页 > Term: brightness meter
brightness meter
Visual-type portable photometer operated by visual comparison of brightness. So named because it can be calibrated to indicate the photometric brightness of the object viewed in the sighting telescope.
- 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)