... Dense-Graded Aggregate 密级配粒料 Open-Graded Aggregate 开级配粒料 gap graded aggregate 间断级配骨料 ...
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... 密级配 close-graded; dense gradation 开级配集料 open-graded aggregate 细级配集料 fine-graded aggregate ...
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open graded aggregate 天然级配集料
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