重力循环加热器的英文

• gravity heater

• 重力:    gravity; force of gravity; g ...
• 循环:    circulate; circle; round; re ...
• 加热器:    calorifier; stove; heat boos ...
• 循环加热器:    continuous flow heater; heating circulator; recirculating heater; recirculation heater
• 锅炉用水循环加热器:    circulation feed water heater