The measurement uncertainty of round aluminium rods for electrical purposes in resistivity was tested and evaluated by means of the test method of square sum root and the test method of pairing .
分别采用了方和根方法和配对试验法对电工圆铝杆电阻率测试的不确定度进行了试验评估和相互验证比较。
Because of requiring no speed detecting devices, this method is effective, simple and practical conception for the electrical parameter measurement of sensorless vector control system.
该方法不需要速度检测元件，从而为无速度传感器矢量控制系统的电气参数测试提供了一种有效、可行的方案。
A method for analyzing electrical excitation mode of electromagnetic measurement while drilling (EM-MWD) is proposed.
本文提出一种电磁随钻测量的电激励模式的分析方法。
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