The heat-resisting bellows diaphragm valve has the advantages of wide applicable temperature range, high fatigue resistance and long service life.
本发明具有适用温度范围广，耐疲劳强度高，使用寿命长。
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。
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。
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