sampled grade
... ruling grade 限制坡度 sampled grade 试样品位 satisfactory grade 成绩符合要求的毕业班 ...
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半工业选矿试样一般有三大特点:质量大、矿岩石样粒度大及控制送样品位难度大。
There are usually three main features about the pilot plant test sample:large mass and large grain size of samples, difficulty to control the sample grade.
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