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1·This paper discusses the relation between the electromagnetic torque of a shunt dc motor and its flux. The torque increases as the flux decreases.

本文讨论了并励电动机用调磁法调速过程转矩随磁通减小而增大的关系。

2·The Breaker can be attached with shunt tripping device, undervoltage tripping device, auxiliary contacts, alarm contacts and motor-operated drive.

断路器可以加装分励脱扣器、压脱扣器，辅助触头，报警触头和电动操作机构。