The track pin is an important component for transferring load in the propulsion device of a self-propelled gun.
履带销是自行火炮推进装置中重要的传力元件。
The methods of using reserve excitation device, transferring reactive load and dropping reactive load are put into service for detecting polarity in Gezhouba Hydropower Plant.
介绍了三种在线校验方法：备用励磁调节、无功负荷转移和甩无功负荷。这些工业试验方法曾在葛洲坝电厂成功使用。
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