This standard covers the procedures for the heat joining of pipe and fittings made from polyolefin materials utilizing either the socket or butt fusion methods.
这个标准涵盖采用承插热熔和对焊热熔方法对聚烯烃材料管道和连接件进行热连接的程序。
This standard specifies the theory, instruments & equipments, test conditions & materials, test methods, results and calculation of the test method for fluidity of cement mortar.
本标准规定了水泥胶砂流动度测定方法的原理、仪器和设备、试验条件及材料、试验方法、结果与计算。
Standard methods are developed and parameters for different materials are calibrated.
开发了标准方法，校正了不同材料的参数。
Standard methods are developed and parameters for different materials are calibrated.
开发了标准方法，校正了不同材料的参数。
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