差压式远传水位表应具有压力补偿功能，以保证各种工况下都能显示汽包中真实水位的变化。
Differential pressure remote water gauge should have pressure supplement function to ensure an actual indication of water line in the bubbles under all kinds of working circumstances.
引入凝结比例系数，简化了汽包液面下汽容积的求取。
A condensation ratio coefficient is introduced to obtain the steam volume under water level in the drum.
同时还研究了变幅低周疲劳下缺口试件和锅炉汽包的损伤，并考虑了平均应力的影响。
Besides, the fatigue damage for both the boiler steam drum and the notch specimen under varied amplitude low cycles is investigated with the effect of average stress taken into account.
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