For example low-pressure heater and deaerator automatic regulators could not be put into automatic operation according to original design scheme.
就其低加组及除氧器水位自动调节系统而言，按其原设计的方案是无法投入自动的。
On the basis of introducing the structure and analyzing the principle of SX421 automatic voltage regulators, this paper applies them to the generating unit excitation voltage system.
介绍和分析了SX421自动电压调节器的结构和原理，在此基础上，本文将其应用于发电机组励磁调压系统。
On the basis of introducing the structure and analyzing the principle of SX421 automatic voltage regulators, this paper applies them to the generating unit excitation voltage system.
介绍和分析了SX421自动电压调节器的结构和原理，在此基础上，本文将其应用于发电机组励磁调压系统。
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