pitch concrete road surface
pitch concrete road surface
沥青混凝土路面
以上为机器翻译结果,长、整句建议使用 人工翻译 。
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Launch old concrete road surface is it spread pitch layer is it reflect research of crack to prevent and cure to add, it is very necessary.
开展旧混凝土路面上加铺沥青面层防治反射裂缝的研究,是很有必要的。
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