A comparison experiment between the common flue-cured house with air descend and the improved close flue-cured house was conducted to investigate the flue-cures cost and economic benefit.
以原烤房為基礎(chǔ)改成增大容量的密集烤房,采用烤煙品種云煙87為材料,對氣流下降式與小型密集烤房的烘烤成本和經(jīng)濟(jì)效益進(jìn)行了對比分析。
Methodology of avoiding condensation and downdraft in displacement ventilation plus cooling ceiling system
置換通風(fēng)加冷卻頂板系統(tǒng)避免結(jié)露和下降氣流的方法
Currently, displacement ventilation and cooling ceiling system (DV/CC) has two main disadvantages: first, condensation will happen when the radiant panel temperature is lower than the dew point temperature of air around it;second, the downdraft from the cooling ceiling destroys the airstream shape of DV, which reduces indoor air quality.
目前冷卻頂板/置換通風(fēng)系統(tǒng)有兩個突出問題:冷卻頂板易“結(jié)露”;冷卻頂板形成的“下降氣流”破壞了置換通風(fēng)的流型,降低了空氣品質(zhì)。
Frontal thunderstorm over the field， up and down drafts up to40 knots.
鋒面雷雨過境，上升下降氣流達(dá)40海里每秒。
strong turbulence in an otherwise cloudless region that subjects aircraft to violent updrafts or downdrafts.
其他無云地區(qū)的強(qiáng)烈的湍流導(dǎo)致飛行器屈從于強(qiáng)烈的上升氣流或下降氣流。
Methodology of avoiding condensation and downdraft in displacement ventilation plus cooling ceiling system
置換通風(fēng)加冷卻頂板系統(tǒng)避免結(jié)露和下降氣流的方法
a local region of low pressure or descending air that causes a plane to lose height suddenly.
使飛機(jī)突然下降的向下氣流或局部低氣壓地區(qū)。
(meteorology) of an air current or wind; moving downward or down a slope because of cooling especially at night.
（氣象學(xué)）指氣流或者風(fēng)；特別是在晚上因?yàn)榻禍囟陆祷蛘哐匦泵嫦陆怠?/p>
The weather forecast says there'll be a cold spell tomorrow, windy, and the temperature will fall to7 below zero at the highest.
天氣預(yù)報(bào)說明天有寒流，刮風(fēng)，氣溫會降到最高氣溫為零下7度。
Characteristic of Heat and Mass Transfer of Falling Film Under Moist Air Sweeping Condition
濕空氣吹掃條件下降膜流動傳熱傳質(zhì)特性
An Experimental Study on the Liquid Hold-up of Gas-Liquid Biphasic Tilted Descending Pipelines
氣液兩相流傾斜下降管持液率實(shí)驗(yàn)研究
Lower inlet style means the dusty flow inlet is situated on the lower part of the bag-house,and the direction of flow is opposite to that of dust precipitastion.
下進(jìn)風(fēng)是指含塵氣體流入口位于袋室下部，氣流與粉塵沉降方向相反。
The temperature is going down; The barometer is falling; Real estate prices are coming down.
溫度正在下降；氣壓下降了；房地產(chǎn)價格正在下降。
updraft and downdraft
上曳氣流和下曳氣流
Temperature decreases with elevation through the troposphere at a rate, normally, of about0.6℃ for100 m.
在對流層，氣溫隨高度減小，其遞減率通常為每上升100米下降0.6℃右。
Welding quality will also decline if there is strong air movement around the working ambience.
如果焊接環(huán)境有較強(qiáng)的空氣流動，也可能造成焊接質(zhì)量下降。
RELATIONSHIP BETWEEN THE JUNE-JULY PRECIPITATION ANOMALIES IN MID-LOWER YANGTZE RIVER AND 500 HPA ATMOSPHERIC CIRCULATION
長江中下游6—7月降水異常與500 hPa大氣環(huán)流的關(guān)系
A parameterization scheme for regional mean runoff over heterogeneous land surface under climatic rainfall forcing
降水氣候強(qiáng)迫下非均勻地表區(qū)域平均徑流的一種參數(shù)化方案
The temperature drops in September.
氣溫在九月間下降。
The temperature has been descended seven degrees at one night.
氣溫一夜間下降了七度。
The temperature falls to - 30 degrees .
氣溫降至零下３０度。