double-acting light bulb tubular turbine and water pump set
Bulb Tubular Turbine
灯泡贯流机
灯泡贯流式水轮机
贯流式机组
贯流式水轮机
灯泡贯流式
灯泡贯流式水轮发电机
bulb tubular turbine generating units
bulb tubular turbine generator
large bulb tubular unit
light bulb for vehicles
light bulb-lens combinatino
light-light transfer efficiency
lightweight Light-Expansion Concrete
White Light Light-Emitting Diode