低电压直流操作 low voltage DC operated

物流操作员 Logistics Specialist ; logistic operator

物流操作 Logistics operations

全回流操作 infinite reflux operation ; total reflux operation

物流操作管理 Logistics & Operations Management

触控流操作 TouchFlow Operation

交流操作 AC operation ; alternating current operation

回流操作 Reflux ; Recirculation operation ; Operation recirculation

直流操作 DC operation