double pipe heat supply system

同义词释义

1)double pipe heat supply system,双管供热系统2)two pipe heating system,双管供热系统3)double pipes,双管4)double tube,双管5)dual tubing well,双管井6)double tube sides,双管程7)extrusion head with double tubes,双管机头8)dual pipe twist,双管钳9)spurting heavy oil with two reduction pipes,双管喷油10)double coring barrel with double spring,双管双簧