This test method covers the determination of the change of resistance with temperature of metallic materials for electrical heating, and is applicable over the range of service temperatures.
本试验方法适用于电热合金随温度变化的测量，亦可用于超过电热合金使用温度范围的情况。
The principle and the design method of a adjustable voltage unit for the heating transformer in electrical upsetting machine is introduced.
系统中包含一个电镦机加热变压器设计和研制的交流调压单元，本文具体介绍了交流调压的原理，电路的设计思想及其特点。
The method of electrical heating screw pump production is developed.
为此，提出了电热杆螺杆泵采油方法。
The test method for change of resistance with temperature of metallic materials for electrical heating was given in this paper.
【中英文摘要】本文介绍了电热合金电阻随温度变化的试验方法。
The test method for change of resistance with temperature of metallic materials for electrical heating was given in this paper.
【中英文摘要】本文介绍了电热合金电阻随温度变化的试验方法。
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