gradation test
... 粒度分析试验：sizing,test 粒度分级试验：gradation test 粒度范围：size range ...
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通过正交试验，给出影响RDX 丙酮重结晶粒度分级工艺的主要因素。
The principal factors affecting the grading process for the recrystallization of RDX from acetone are given through the orthogonal test.
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