The causes of corrosion and fouling are discussed depending on the following variables:type of fuel, firing procedures, sulfur content, degree of slagging and excess air.
从锅炉燃料的含硫量、燃烧过程、锅炉结渣倾向、过剩空气量等几个方面分析了低温受热面的腐蚀和积灰发生的原因。
Choosing Proper Excess Air Coefficient for Direct Fired Heater
原油直接式加热炉过剩空气系数的合理选用
The motions of air and water shift energy from the regions of surplus to regions of deficit.
空气和水的运动将能量从过剩的地区带到不足的地区。
air transmission coefficient
透气系数，空气透过率
All that remained of the building after the fire was an empty shell.
一场大火过后，这座建筑剩下的只是一个空壳。
Study on Anaerobic Digestion by Solid Method with Waste Activated Sludge to Produce Methane;
剩余污泥固态法厌氧消化产沼气过程的研究
As this cold air moved through the woods,
当冷空气穿过树林时，
a sound wave that is transmitted via air.
通过空气传播的声波。
cooled by air conditioning.
通过空气调节器制冷的。
high efficiency particulate air filter
高效微粒空气过滤器
cold air flows in and replaces it.
冷空气便流过来补充。
high efficiency air filter unit
高效空气过滤器设备
It had spread across the high valley.
冷空气穿过大峡谷。
A balloon floated across the sky.
有个气球从空中飘过.
The air is passed through sprays of liquid.
空气通过液体喷淋装置。
the process of taking in and expelling air during breathing.
吸入和呼出空气的过程。
A tuning fork transmits sound waves through the air.
音叉通过空气传播声音。
Air pressure forces the water through the pipe.
空气压力使水通过管道.
The gaseous weapon residues are then vented through the hollow central portion of the water column.
这时气态的炸弹剩余物将通过水柱中央喷到大气中。