除湿热泵机组
heat pump for dehumidification
大水泵机组并联运转
big pump unit parallel running
大型风冷热泵机组
Large-sized Test Device for Air-cooled Heat Pump Unit
大型立式泵机组
a large vertical pump unit
大型水泵机组
large pump units
Large pumping unit
Large scale water pump unit
large pump unit
大型水泵机组的维修性
Maintainability of large pump units
电动微型水泵机组
motor driven miniature pump set