Its main work includes the Yellow river sediment cross-section tests, river bed surface quality sampling and particle size distribution analysis and so on.
其主要工作内容包括黄河河道断面淤积测验，河道表层河床质取样及颗粒级配分析等工作。
Factors influencing the tensile strength of polymerizer head sample were introduced, which included the sampling position, sampling direction, sampling quantity and the cross section shape of sample.
介绍了影响聚合釜封头试样拉伸性能的因素：取样部位、取样方向和取样数量及试样的横截面形状。
DESIGN: Random cluster sampling methods and a cross-section survey.
设计：随机整群抽样，横断面调查。
In Guanling county, Guizhou province, an investigation and sampling to different landforms and cross section of land usage types was conducted on the drainage basin in Shiban Bridge River.
在贵州省关岭县石板桥小流域进行了不同地貌部位及不同土地利用类型的土壤剖面调查和采样，并对土壤样品进行了实验室分析，测定了总有机碳及土壤质地等指标。
In Guanling county, Guizhou province, an investigation and sampling to different landforms and cross section of land usage types was conducted on the drainage basin in Shiban Bridge River.
在贵州省关岭县石板桥小流域进行了不同地貌部位及不同土地利用类型的土壤剖面调查和采样，并对土壤样品进行了实验室分析，测定了总有机碳及土壤质地等指标。
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