这个标准描述了获得流体静力设计应力(最大工作强度)的步骤，用于任何实际温度下的任何热塑塑料管道材料。
This standard describes the procedure for obtaining the Hydrostatic Design Stress (maximum working strength) for any thermoplastic pipe material at any practical temperature.
对短时工作电动机最大功率的测量是困难的，要在标准电源、标准环境温度下的测量更加困难。
It's quite difficult to test the maximum power of the electric motor for short - time work, not to mention the measurements under standard voltage and temperature. Nowadays.
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