downdraft 中文意思是什麼
downdraft
解釋
（煙囪的）倒灌風；向下通風；向下氣流。-
The three - dimensional cloud model with hail - bin microphysics could simulate the characteristics of the severe storm such as life cycle, rainfall distribution and diameter of hail well, and also could produce strong downdraft and wind shear ( downburst )
而利用三維強冰雹雲模式對此次強風暴的生命史、降水分佈、降雹的大小等要素做了較好的模擬，並能夠模擬出伴隨強風暴過程所產生的強下沉氣流和及地面強風速切變（下擊暴流） 。 -
Dcv downdraft constant vacuum carburettor
下吸式等真空化油器 -
With stromberg downdraft carburetor
強力下吸式化油器 -
Severe thunderstorms are associated with intense convection, often resulting in violent downdraft and heavy rain
強烈的雷暴與劇烈對流有關，經常會帶來猛烈的下沉氣流和大雨。 -
Ventilation : positive downdraft exhaust ventilation should be provided to maintain vapor concentration below tlv
通風：為了使氣體聚集程度維持在閥極限值之下，應提供通暢的向下棋流排氣通風設施。 -
The horizontal width of the condensate falling from the convective cells was much less than the width of the observed mesoscale downdraft ( 60 km compared to 150 km )
從對流單體降落的冷凝物的水平寬度比觀測到的做尺度下沉氣流的寬度小得多（前者60公里而後者150公里） 。 -
" we shot the scene many times, and at the end of each take, the helicopter would circle round. the downdraft nailed me flat onto the grass, and a couple of times i bit the dust
「那場戲拍攝了許多次，每次結束時，直升機產生的強大的氣流都讓我摔倒在草地上，我經常是滿嘴含沙。 -
An aircraft flying through a microburst may first encounter an increasing headwind and lift, then a downdraft from above the aircraft, followed by an increasinig tailwind and sink
飛越微下擊暴流的飛機可能首先會因逆風增強而浮力增加，隨即遇到上空的下沉氣流，繼而因順風增強而沉降。 -
Through using the data of numerical simulation by mm5 model, and introducing density temperature, cape ' s calculation accroding to the reversible saturated moist adiabatic process which correspond with the actual atmosphere course more was emphatically discussed. thirdly, based on this, the dcape is introduced farther. dcape has close relationship with convective downdraft and convective storms developme nt. fourthly, the using of hourly model - generated soundings is introduced in this paper
本文通過對2003年7月4日南京站的大暴雨過程的mm5數值模擬，引入密度溫度t _ ，重點討論了根據大氣可逆飽和濕絕熱過程進行cape的過程。第三步，在cape模式資料實現的基礎上，進一步討論新近提出的與對流風暴發展密切相關的下沉對流有效位能。
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