Based on numerical simulation, obtains the distributions of the dry-bulb temperature of primary air and the dry-bulb and wet-bulb temperatures of secondary air along the flow direction of primary air and secondary air, and the temperature variation of water falling film.
建立了数学模型,对叉流平板式间接蒸发冷却过程进行了数值模拟分析,得到了分别沿一、二次空气流动方向一次空气干球温度和二次空气干湿球温度的分布,以及水膜温度的变化情况。
The curve of relationship between flame speeds and the primary air ratio is got, and when primary air ratio is about 0.
得出了二甲醚火焰传播速度与一次空气系数的关系曲线,并且在一次空气系数约为0。
The relationship between the primary air ratio of injector and the negative pressure in combustion chamber is studied.
在不同的热负荷和一次空气吸入口面积下安排了 4组实验 ,研究了强制排风式热水器燃烧室负压对引射器一次空气系数的影响规律。
In the burner, twig-shape burner port was used to stablize the flame, lower burner port thermal intensity and raise primary air ratio.
介绍了采用条缝型火孔结构、稳定火焰、降低火孔热强度 ,提高一次空气系数 ,同时采取措施 ,控制二次空气的自由供入 ,达到降低NOx 的效果 ;分析和探讨了影响NOx 生成的诸多因素及抑制NOx 生成的方
Marianne was all the time busy in observing the direction of the wind, watching the variations of the sky, and imagining an alteration in the air.
玛丽安则一直忙于观察风吹的方向，注意天色的变化，幻想来一次空气的对流。
METEOROLOGICAL CONDITIONS OF A CONTINUOUS AIR POLLUTION PROCESS IN NANCHANG CITY
南昌市一次连续空气污染过程的气象条件分析
Analysis of a shut-down accident caused by automatic air switch trip
一次自动空气开关跳闸引起停机事故的分析
secondary air injection relief valve
二次空气喷射减压阀
Analysis of a Large-scale haze in a cold air invasion process over Jiangxi province
江西省一次冷空气过程中的灰霾天气过程分析研究
Analysis on Spatial-temporal Characteristics of Air Pollution during a Regional Haze Episode over Pearl River Delta
珠江三角洲一次大范围灰霾天气下的空气污染特征分析
Once they are out on the street, the cars will take in air and replace it with poisonous gases. Again, more smoke and soot.
汽车一旦出厂在街上行驶，将会吸进空气，排出有毒的气体，再次增加空气中的烟尘。
At one point the company bought from Nippon Airways a 727 jet.
有一次公司从日本航空公司买了一架727型喷气机。
hygienic habits like using disposable tissues; hygienic surroundings with plenty of fresh air.
诸如使用一次性纸巾等的卫生习惯；充满新鲜空气的健康环境。
The city inaugurate the clean - air campaign with a bicycle parade
该市举行了一次自行车队游行以示净化空气运动的开始
These were the first toxic air pollutant standards developed under the two-step procedure ordered by the court of appeals.
根据上诉法院安排的两步程序，第一次提出有毒空气污染物的标准。
There are a few problems of air pollution by chemicals, lint, etc., but these are minor.
化学品、棉花等也造成一些空气污染问题，但这是次要的。
The city inaugurated the clean-air campaign with a bicycle parade.
该市举行了一次自行车队游行以示净化空气运动的开始。
The source of the arctic air for this cold wave may be traced upstream tothe Arctic Ocean to the east of Greenland.
此次寒潮的冷空气源地,一直可以溯源至格林兰东方的北冰洋上。
A CASE STUDY OF THE CHARACTERISTICS OF STRONG WIND NEAR THE OCEAN SURFACE DURING A STRONG COLD AIR PROCESS IN BOHE GUANGDONG
广东博贺近海海面的一次冷空气过程强风特征分析
The air was pure and cold．The sun，painting the sky with an intense blue，again hid the ever-watching stars．
空气纯净而清冷，太阳将天空刷成蔚蓝的一片，阳光也再一次藏起了星星，可它们仍在那儿张望着。
But time after time the line came up empty.
但一次又一次，绳子拉上来，空无一物。
The top line showed my tidal volume- the amount of air inhaled with each breath- over the16 minutes that I'd worn the LifeShirt.
最上头的一条显示我穿著「命衣」6分钟之间的潮气量，也就是每次吸入空气的量。