GB/T 21968-2020YBZS系列起重用隔爆型双速三相异步电动机技术条件标准
英文:YBZS series flameproof double-speed three-phase induction motors for crane application—Technical specification GB/T 2...
英文:YBZS series flameproof double-speed three-phase induction motors for crane application—Technical specification GB/T 2...