短语词组短语water chiller -heater units 冷热水机组desalted water pre -heater 软水预热器air -source water chiller-heater unit 空气源冷热水机组water -bed heater 水床加热器a water -heater 热水器gas water -heater 煤气烧水炉;翻译 返回 water-heater