風的切變 的英文怎麼說
中文拼音 [fēngdeqiēbiàn]
風的切變
英文
wind shear-
Impact of windshear on ascending or descending air crafts
風切變對升降中航機造成的影響1. aviation meteorology : altimetry ; turbulence and wind shear ; aircraft icing ; route and aerodrome forecasts ; preparation of aviation weather documents
1 .航空氣象學:包括測高學湍流及風切變飛機積冰機場及飛機航線天氣預報航空氣象文件的編制。Based on the sha lo wan profiler data at 0740utc, the vertical shear at around 1, 100 ft was close to 8 kt per 100 ft. although this was lower than the 8 kt per 100 ft which has been used in the windshear warning system at the old kai tak airport, the increase in head wind was nonetheless significant due to the steep climb angle
根據沙螺灣的氣流剖析儀在0740utc錄得的資料顯示,在約1 , 100尺的垂直切變接近每百尺每小時8海里。雖然此切變低於以往啟德機場的風切變警報系統所用的每百尺每小時8海里,但因為陡峭的爬升角度,令到逆風的增加變得顯著。A sea - breeze front was clearly discernible over an area on the western part of the airport where outgoing winds ( the background wind, warm colours ) and incoming winds ( sea breeze, cold colours ) met. this new piece of equipment had enabled the observatory to issue in advance a windshear alert for that occasion
清楚的顯示機場西面出現一道海風「鋒」 ,這正是遠離激光雷達的氣流背景風,暖色和趨向激光雷達的氣流海風,冷色相遇的位置。這套新的儀器令天文臺能夠于該天提早發出了風切變預警。A sea - breeze front was clearly discernible over an area on the western part of the airport where outgoing winds the background wind, warm colours and incoming winds sea breeze, cold colours met. this new piece of equipment had enabled the observatory to issue in advance a windshear alert for that occasion
清楚的顯示機場西面出現一道海風「鋒」 ,這正是遠離激光雷達的氣流背景風,暖色和趨向激光雷達的氣流海風,冷色相遇的位置。這套新的儀器令天文臺能夠于該天提早發出了風切變預警。It was not often that she could turn her eyes on mr. darcy himself ; but, whenever she did catch a glimpse, she saw an expression of general complaisance, and in all that he said she heard an accent so far removed from hauteur or disdain of his companions, as convinced her that the improvement of manners which she had yesterday witnessed, however temporary its existence might prove, had at least outlived one day
她雖然不能常常向達西先生顧盼,可是她只消隨時瞥他一眼,就看見他臉上總是那麼親切,她聽他談吐之間既沒有絲毫的高傲習氣,也沒有半點蔑視她親戚的意味,於是她心裏不由得想道:昨天親眼看到他作風大有改進,那即使是一時的改變,至少也保持到了今天。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) 。An aircraft flying across this region would have experienced severe windshear reaching 22 ms, or about 43 kts loss or gain in headwind
如飛機橫過這區域將會受到強度達22米秒的猛烈風切變,即逆風增加或減少約43海里小時。An aircraft flying across this region would have experienced severe windshear reaching 22 m s, or about 43 kts loss or gain in headwind
如飛機橫過這區域將會受到強度達22米秒的猛烈風切變,即逆風增加或減少約43海里小時。Windshear as high as 30 knots in sea breeze
海風中高達30海里小時的風切變!With the turning of winds at hkia to southerly, the signature of windshear over the airport became more prominent
其後香港國際機場轉吹偏南風,風切變影響機場的情形更為明顯。Under the influence of strong gale force winds of typhoon york when it buffeted hong kong in 1999, various types of terrain - induced windshear with different magnitudes appeared in the vicinity of clk
1999年臺風約克吹襲本港,在強烈風影響下,赤角附近出現由地形引致不同類型和強度的風切變。The diagnostic analysis for the sandstorm process on the base of height, temperature, pressure and wind etc output from the model shows that the upper cold trough, low - level wind shear, surface cold anticyclonic ridge, mesoscale cyclone and cold front are the main synoptic systems, surface cold anticyclonic ridge and cold front provide condition of wind force to occurrence of the sandstorm weather, the strong mesoscale cyclone before front makes pressure gradient before and after cold front obviously strengthen, moreover, and it increases obviously the temperature of the controlled area, as a result, the updraft movement caused by convergence before front strengthens
500hpa強鋒區、 700hpa切變和鋒前中尺度系統的強弱及位置變化是沙塵暴天氣發生發展到減弱的直接原因。地面冷高壓、地面氣旋及冷鋒是造成本次沙塵暴天氣的主要地面天氣系統。地面冷高壓及冷鋒為沙塵暴天氣的發生提供了風力條件,而中尺度氣旋使冷鋒前後氣壓梯度明顯增強外,又使所控制的區域增溫明顯,使鋒前輻合上升運動加強,為沙塵暴天氣的發生提供了熱、動力條件。Fig. 15 two sets of anemometer and wind vane at the northwest end of the runway form part of the low - level wind shear detection system for the old kai tak airport
圖15在啟德機場跑道西北端的兩組風向風速表是低空風切變偵測系統的一部份。Topics discussed included the progress in windshear alerting service, amendment 72 to icao annex 3, re - organization of airspace in the south china sea, the annual survey on services provided by the hong kong observatory, world area forecast system wafs transition matters, the launch of broadband amids and the progress on automatic dependent surveillance controller pilot data link communication ads cpdlc and aircraft meteorological data relay amdar. fig. 15 meeting on aviation weather services with air traffic management bureau, civil aviation administration of china, 12 november 2001, beijing
會上討論多項議題,包括風切變警告服務的最新進展國際民用航空組織icao附件3須作出的第72號修訂中國南海空域的重組天文臺的周年服務意見調查世界航空區域預報系統wafs過渡事宜推出寬頻航空氣象資料發送系統amids ,以及自動從屬監視系統飛行員管制員數據鏈通訊ads cpdlc和飛機氣象數據下傳amdar計劃的最新進展。The emphasis in this composition is windshear signal processing technology. some processing methods are introduced in detail, they are suppressing clutter, extracting windshear parameters, computing hazard factor and etc. the signal processing simulation is accomplished on computer, it includes simulating microburst echo signal, simulating ground clutter echo signal, filtering clutter, estimating wind speed and calculating hazard factor. from the simulated results, a dangerous windshear is detected 5o ~ 78s, so the radar performance meets the certification requirements proposed by faa and nasa
本文重點研討了風切變信號處理技術,對雜波抑制技術、風切變特徵參數提取技術及危險因子計算方法等內容進行了深入的研究,並進行了計算機模擬,包括微下擊暴流回波信號模擬、地雜波回波信號模擬、雜波抑制、風速提取和危險因子計算。Low - level windshear and turbulence alerts for the approach and departure areas within 3 nautical miles of the runway thresholds are issued by the amo for relay by air traffic controllers to approaching and departing aircraft
機場氣象所發出在跑道進口3海里內的機場升降區的低空風切變及湍流警報,由航空交通管制員轉送至正在升降的航機。The shear experienced by the departing aircraft was due to vertical shear as the plane passed through the low level jet. based on the winds measured on - board a flight departing 8 minutes earlier, there was a rapid increase in head wind component, from 13 kt at 1, 420 ft to 39 kt at 3, 100 ft
起飛的飛機所遇到的風切變是由於該機經過低層急流的垂直切變所引致,根據一架在8分鐘前起飛的航機量度到的風速,顯示逆風由1 , 420尺的每小時13海里急速增加到在3 , 100尺的每小時39海里。Aiming at such problems in combustion system of homemade middle and miniature boiler, as a complex system with the character of dead zone, time variation, serious non - linearity, large time delay, coupling and a lot of disturbance, this paper presents a new set of optimal control resources. by using well - matched control method on system, stable automatic running is realized. having the serious divulgence coals difference a lot from each other in character, instability of chemistry, value of lowest emission of heat, home - made boiler controller is not at all ideal. instead of traditional model that controls the ratio based on proportional control or with the correct signal of the amount of oxygen, this paper, combined with intellect control theory - - fuzzy control and self - optimizing concept, propounded a kind of fuzzy self - optimizing controller to be used in air supplying system of the boiler, and expatiates on the idea of dividing the control process into two parts, dynamic and static to realize, thus meets the demand of homemade boiler economic running
本設計針對國產中、小型電站鍋爐燃燒系統參數時變、嚴重非線性、干擾因素復雜、耦合嚴重、模型不易確定的特點,提出多變量協調控制方案,解決了系統可控性差,難以實現穩定自動運行的問題;在此基礎上,改變以往以煙氣含氧量控制送風的傳統模式,針對國產電站鍋爐設備主體及一、二次送風迴路泄露嚴重,煤種混雜、成分不穩定、燃燒發熱值低、燃燒效率不高等問題,應用智能控制理論中的模糊控制技術,結合自尋最優控制的思想,設計了一種模糊自尋優控制器,應用在電站鍋爐送風控制系統上,並闡述了動靜態兩種實現途徑,通過在線優化風煤配比,實現最佳經濟燃燒,切實保障了鍋爐的經濟運行。There were wind shear and maximum wind speed occurred above or below the height of potential instability area and one of them happened before potential instability
位勢不穩定區所在高度的上方和下方會有風向切變和風速極大值中心,並且風切變或急流中心會早於位勢不穩定的出現。分享友人