短语词组短语evaporator coil outlet pipe 蒸发器盘管出口管coil cooling pipe 蛇形冷却管coil fixing pipe support 固定管架coil for pipe pile 管桩用盘条horizontal coil pipe 横盘管coil pipe heat exchanger 盘管换热器cooling coil pipe 冷却盘管preheating coil pipe 预热盘管 返回 coil pipe