gradation teaching method 分层教学
gradation analyzing method 层次分析方法
SAC gradation design method SAC断级配设计方法
aggregate gradation test method 矿料级配检验方法
mathematics gradation teaching method 数学分层教学
Gradation of modified method 修正法定级
gradation index model method 定级指数模型法
Sandstone and limestone are the main targets cut by oil and gas well drilling and for their physical mechanical property there have been systematic determination method and quantitative gradation.
砂岩和石灰岩是石油天然气钻井破岩的主要对象，它的物理力学性质已有系统的测定方法和定量分级。
The results indicate that with this testing method, an visual gradation design is realized and the conclusions derived may serve as a guideline for the design and the construction of asphalt mixture.
结果表明，使用这种方法不仅实现了可视化级配设计，而且所得结论可以指导沥青混合料级配设计和施工。
Through a great number of Pu-Nan experiment datas, the pater put forward to the mixture design method, requirement of aggregate, gradation of mixture for dense graded aggregate base.
本文结合浦南路实测资料，提出了多雨潮湿地区级配碎石的设计指标、材料技术要求、级配范围要求。
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