When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable.
万一变
器出现故障时,

驱动,转速不
调。
调整的,不需调整的When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable.
万一变
器出现故障时,

驱动,转速不
调。
明:以上例句、词性

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