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采用不同的粗细集料质量比例进行级配合成设计,并进行级配的优选。
Using different degree of aggregate ratio of quality level, and combined design of optimization.
youdao
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采用不同的粗细集料质量比例进行级配合成设计,并进行级配的优选。
Using different degree of aggregate ratio of quality level, and combined design of optimization.
youdao