首页 > Term: Craelius drilling machine
Craelius drilling machine
A small, fairly light boring machine for shallow exploratory borings underground. It drills in any direction (downwards, upwards, horizontally, or obliquely) to depths of from 200 to 1,000 m, but usually only 50 m. It uses coring or solid bits, with or without flushing and can be driven either by hand, any oil engine, compressed air, or electricity.
- 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
- 100% positive feedback
(Milwaukee, United States)