downdraft (煙囪的)倒灌風；向下通風；向下氣流。
(煙囪的)倒灌風；向下通風；向下氣流。 “downdraft (downdraught)“ 中文翻譯： 下沉氣流“downdraft boiler“ 中文翻譯： 下部排煙鍋爐“downdraft carburat“ 中文翻譯： 下吸式汽化器“downdraft carburetor“ 中文翻譯： 下吸式化油器“downdraft entry“ 中文翻譯： 進入下降氣流“downdraft furnace“ 中文翻譯： 倒風爐; 下引風爐膛“downdraft hood“ 中文翻譯： 下吸式抽風罩“downdraft metier“ 中文翻譯： 順流型干式紡絲機“downdraft sintering“ 中文翻譯： 真空燒結“downdraft ventilator“ 中文翻譯： 下風道式通風機“thunderstorm downdraft“ 中文翻譯： 雷雨下沖流“unsaturated downdraft“ 中文翻譯： 未飽和下沖流“all downdraft drying grate“ 中文翻譯： 全抽風干燥式壁爐; 全抽風干燥式鏈篦機“all downdraft grate cycle“ 中文翻譯： 全抽風式鏈篦機循環“downdraft métier“ 中文翻譯： 順流型干式紡絲機“downdraft sintering machine“ 中文翻譯： 吸風燒結機“portable downdraft submersible pump“ 中文翻譯： 便攜下吸式潛水泵“downdraf“ 中文翻譯： 倒焰“downdiwell“ 中文翻譯： 下傾部位的井“downdiwater injection“ 中文翻譯： 沿下傾部位注水“downdiwater flow“ 中文翻譯： 順傾向水流“downditrap“ 中文翻譯： 下傾圈閉
downer |
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Abstract : this paper presented the straw gasification technology for cooking gas supply to rural households ， and constitution of the supply system developed by energy research institute of shandong academy of sciences ( eri of sdas ) technical characteristics of the system ， in particular of the fixed bed downdraft straw gasifier was assessed ， and some opinions for further improvement of performances of the system were given 文摘:介紹了山東省科學院能源研究所研究開發的農村秸稈氣化集中供氣系統的工作原理和系統組成；對系統，特別是氣化爐的技術性能進行了評價，并給出相應的結論；對進一步改進系統性能的方向提出了建議。 |
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It showed that mm5 could well simulate the mescoscale background field and the occurrence and development of the convective storm . but the values of the simulated updraft and downdraft , especially downdraft , were much smaller than that observed due primarily to the large grid size that mm5 has 模擬試驗的結果表明， mm5中尺度模式能夠很好的模擬出強對流天氣發生發展的中尺度背景場及對流云團的結構與演變過程，但是由于mm5的網格尺度較大，對于強對流系統中的強上升氣流和下沉氣流的模擬，尤其是下沉氣流的模擬強度相對較小。 |
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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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Microbursts induced by thunderstorms microburst is the most violent form of downdraft from a thunderstorm . it is characterized by an intense and localized descent of cool air , causing a sudden outflow of horizontal winds above the ground with a typical horizontal extent of a few kilometres 微下擊暴流是由雷暴引致的一種最猛烈的下沉氣流，其特徵是一團強烈而局部的冷空氣下沉，引致地面上出現突如其來在水平方向往外擴散的風，范圍通常達數千米。 |
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After the storm move in shandong area , the moist downdrafts appears , the mgws apart from the thunderstorm and move faster , the mgws weaken gradually because absence of wave duct and energy supply 成熟階段的對流風暴，由于中高層潛熱釋放和濕下沉氣流進一步加強，波動傳播加快； mgws和對流風暴分離后，因無“波道”機制和波能供給，波幅逐漸減小。 |
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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。 |
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“ 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。 |
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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公里而后者150公里） 。 |
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When rain - cooled downdrafts hit warm air near the ground , a low hanging revolving cloud forms beneath the cell ， a tornado is imminent 當雨冷凝形成的下降氣流遭遇地表暖氣流時- - - - “超級風胞”下方一股低空旋轉的云團便已形成，龍卷風就要讓我們大難臨頭了。 |
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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。 |
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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。 |
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With stromberg downdraft carburetor 強力下吸式化油器 |
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Dcv downdraft constant vacuum carburettor 下吸式等真空化油器 |