燃气锅炉

nà miàn qiáng shang ān zhuāng zhe yī gè rán qì guō lú

那面墙上安装着一个燃气锅炉。

There was a gas boiler mounted on the wall.

jiàng dī rán qì guō lú pái yān rè sǔn shī fāng fǎ tàn tǎo

降低燃气锅炉排烟热损失方法探讨

discussion on recovery of waste heat from boiler fluegas