unbound graded aggregate base
unbound graded aggregate base
未粘结级配骨料基层
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The structure forms and the construction craft of unbound graded aggregate base are analysed. It will be of some use in unbound graded base which are used for base of road.
深入分析了级配碎石基层的路面结构形式和施工工艺，对级配碎石广泛应用于路面基层具有一定的指导意义。
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