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中国矿产资源
释义
中国矿产资源
Encyclopedia
理学
中国矿产资源
释
mineral resources of China
中国矿产资源
在中国境内,经过地质成矿作用而形成的、天然赋存于地壳内部(埋藏于地下)或地表(出露于地表)、呈固态和液态或气态的、具有开发利用价值的矿物或有用元素的集合体。
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frequency attribute
frequency band
frequency bandwidth constraint
frequency bridge
frequency calibration
frequency capture
frequency centre
frequency characteristic
frequency characteristic of sound pressure
frequency chart
frequency chirp
frequency coding
frequency collapse
frequency comparision
frequency compensation
frequency conversion
frequency conversion circuit
frequency conversion technique
frequency conversion transformation of fan and water pump
frequency converter
frequency counter
frequency criterion
frequency curve
frequency cutoff
frequency dependence selection
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