It adopted stepping electronic rheostat and thyristors, and had developed new direct-current motor ( DCM ) adjustable-speed circuit.

  • 采用步进式电子变阻器和晶闸管研制成的新型直流电机调速电路能使速度逐级平缓地变化.

  • 互联网摘选 2025-01-19 09:40:30

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