on-air

During Christmas everybody treads on air.

圣诞节期间每个人都喜气洋洋。

1,a new mathematical model for heat loss due to exhaust gas of CFB boiler with considering the effect of desulfurater on air capacity,gas capacity and steam capacity is deduced.

排烟热损失是锅炉最大的一项热损失,对锅炉热率有很大影响。