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矿区平均品位
释义
矿区平均品位
Encyclopedia
工学
〔矿产工业指标〕
释
average grade of mine district
矿区平均品位
整个矿床(区)中有用组分的总平均含量。又称矿床平均品位。是从整体上衡量矿床贫富程度的一项参数,也是衡量某些矿床(尤其是矿石品位变化大的)在当前是否值得开发建设和开发后能否获得预期经济效益的一项指标。
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optical frequency measurements
optical frequency mixing
optical frequency standard
optical functional composites
optical functional materials
optical function crystals
optical gain
optical gain, light gain
optical galaxy
optical gate
optical glass
optical glass fiber
optical glow
optical goniometer
optical grating transducer
Optical Gravitational Lensing Experiment
optical grinding
optical guidance
optical gyroscope
Optical Hawaiian Array for Nanoradian Astronomy
optical heterodyne
optical heterodyne detection
optical holographic recording materials
optical holography
optical homodyne
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