In this article, working principle, composition of circuit and working characteristic curve are discussed.
文章论述了电动机软起动控制的工作原理, 控制电路组成,工作特性曲线.
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The changes of steam pressure and temperature canont influence the trap . It'sas good working characteristic.
该阀不受蒸汽压力、温度变化的影响, 具有良好的工作特性.
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