基于大田土壤水分入渗试验与相关参数的测定，分析了耕作土壤入渗能力衰减过程，探讨了耕作土壤入渗能力衰减机理。
Based on soil water infiltration testing and related parameters measured in field, tillage soil water infiltration capacity attenuation process was analyzed and the mechanism was discussed.
本课题进行了以下设计与试验：（1）测定磁感喷油器的磁敏元件和挺杆之间的最佳间隙。
The experiments as follows are done:(1) Space of magnetism sense organ and needle valve is measured.
通过对掺高效减水剂水泥净浆流动性及流动性损失的测定试验，研究了高效减水剂与水泥及掺混合材水泥的相容性。
The compatibility of the superplasticizer with straight cement and admixture cement is investigated by testing the fluidity loss of cement pastes containing the superplasticizer added.
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