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third class highways
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  三级公路
     And then, the scales of cement concrete pavement construction on freeways and on first, second and third class highways in China by the year of 2000 are predicted, ann the total quantity of portland cement required for construction of these pavements is estimated.
     继则对2000年我国高速公路和一、二、三级公路上水泥混凝土路面的发展规模水平进行预测,并估计出实现这一设想所需耗用的水泥数量。
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  相似匹配句对
     the third,the multimedia teaching in class;
     三是借助电教多媒体;
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     the third class of the model is evaluating factor;
     第3层次是评价因素层;
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     The third is practice.
     第三是练习。
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     The third is it's measurement.
     三是混凝土几何尺寸及位置。
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     Class and Gender
     阶级与性别
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Firstly, this paper presents the state-of-the-ast of cement concrete pavement construction on highways, streets and airports in China, and gives a detailed analysis of the reasons why the concrete pavement construction in China grows so rapidly in recent years. And then, the scales of cement concrete pavement construction on freeways and on first, second and third class highways in China by the year of 2000 are predicted, ann the total quantity of portland cement required for construction of these pavements...

Firstly, this paper presents the state-of-the-ast of cement concrete pavement construction on highways, streets and airports in China, and gives a detailed analysis of the reasons why the concrete pavement construction in China grows so rapidly in recent years. And then, the scales of cement concrete pavement construction on freeways and on first, second and third class highways in China by the year of 2000 are predicted, ann the total quantity of portland cement required for construction of these pavements is estimated. Finally, this paper puts forward tentatively, in seven respects, the topics for further scientific research of cement concrete pavement construction, based on the current situation and existing problems of concrete pavement construction on highways in China and referred to the technical level of concrete pavement construction in developed and industrialized countries in the early 1980's.

本文首先阐述了我国公路、城市道路和机场道面上水泥混凝土路(道)面的发展现状,并对近年来我国水泥混凝土路面迅速发展的原因进行详细的分析。继则对2000年我国高速公路和一、二、三级公路上水泥混凝土路面的发展规模水平进行预测,并估计出实现这一设想所需耗用的水泥数量。最后,本文根据我国公路水泥混凝土路面的现状和存在的问题,并参考一些工业发达国家80年代初水泥混凝土路面的科技水平,初步分七个方面,提出我国目前应进一步开展的混凝土路面科学研究课题。

 
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