Noun:

1. a pipe through which fluids can be discharged

dischargekey放电键dischargev.排出；释放；解雇；放电；解除；清偿债务n.卸货；释放；发射；放电；准许离开；排出物discharge flow method放电流动法Discharge by Operator由操作员卸载discharge of the fuel卸燃料discharge of bacteria排菌discharged water flow泄流量discharge certificate出院证明书discharge coefficient放电系数,流量系数discharge electricity放电回路discharge controlling流时控制discharge of flue gas排烟

1. In the multitudinous heating system, the heatinterchanger nearly all is a steel pipe.
   在众多加热系统中，散热管几乎全是钢管。