降落機場前 的英文怎麼說
中文拼音 [jiànglàjīchǎngqián]
降落機場前
英文
the approach- 降 : 降動詞1. (投降) surrender; capitulate 2. (降伏) subdue; vanquish; tame
- 落 : 落名詞[方言] (北方對蓮花落的俗稱) a kind of folk song
- 機 : machineengine
- 場 : 場Ⅰ名詞1 (平坦的空地 多用來翻曬糧食 碾軋穀物) a level open space; threshing ground 2 [方言] (...
- 前 : Ⅰ名詞1 (在正面的) front 2 (次序在先的) first; top 3 (過去的; 較早的) ago; before; preceding...
- 降落 : 1 (落下; 下降; 低落) descend; fall alight; drop down; build down; tumble; lapse; descension2 (...
- 機場 : airdrome; airfield; airport; flying field; adrm; aerodrome
-
Because the introduced aeroboat is only one, maintenance become very difficult in case of the lack of spare part, to the worst result in stopping flying, bring the money lose of customers, furthermore, the taking off or landing of such driver carring aeroboat needs the airport and the number of the small type airport in our country is not more and it is very difficult to hire the
因飛艇是進口的且只有一條,如有損壞或配件不全,決非像修汽車那麼簡單,搞不好就要停飛,使客戶蒙受不必要的損失。而且載人飛艇的起飛降落存放都離不開機場,國內小型機場並不多,而租用大型的民用機場又非易事,綜合以上原因不難看出,目前我國的國情還不太適合大型載人廣告飛艇的市場發展。A large planar microphone array, which consists of 111 microphones, was successfully applied to obtain a two - dimensional mapping of the sound sources on a landing aircraft. the focus of study in this paper is on the landing gear noise source. the spectra, directivities and sound pressure levels of flap side - edge noise of 7 narrow - board commercial aircraft and 7 wide - board commercial aircraft are presented. it is found that the landing gear noise spectrum is broadband with some single tones in some cases. the directivity of the total sound pressure level of a landing gear noise resembles that of a horizontal dipole. the level differences between the various aircraft landing gears are larger than those expected from the airspeed differences. it is thus expected that the louder noise emission of the landing gears can be reduced by redesigning
應用由111個傳聲器組成的平面傳聲器陣列對當前流行的民用客機進場著陸過程中的機體噪聲源進行了實驗測量,本文對七架窄體客機和七架寬體客機的起落架噪聲進行了分析,得到了起落架噪聲的頻譜特性、指向特性和聲級變化.研究發現,起落架噪聲的頻譜是由寬頻隨機噪聲與一些較為明顯的單音噪聲源組成,起落架噪聲的指向性類似於一個水平放置的偶極子.不同飛機起落架噪聲的聲級相差較大,這說明可以通過重新結構設計降低起落架噪聲。Abstract : a large planar microphone array, which consists of 111 microphones, was successfully applied to obtain a two - dimensional mapping of the sound sources on a landing aircraft. the focus of study in this paper is on the landing gear noise source. the spectra, directivities and sound pressure levels of flap side - edge noise of 7 narrow - board commercial aircraft and 7 wide - board commercial aircraft are presented. it is found that the landing gear noise spectrum is broadband with some single tones in some cases. the directivity of the total sound pressure level of a landing gear noise resembles that of a horizontal dipole. the level differences between the various aircraft landing gears are larger than those expected from the airspeed differences. it is thus expected that the louder noise emission of the landing gears can be reduced by redesigning
文摘:應用由111個傳聲器組成的平面傳聲器陣列對當前流行的民用客機進場著陸過程中的機體噪聲源進行了實驗測量,本文對七架窄體客機和七架寬體客機的起落架噪聲進行了分析,得到了起落架噪聲的頻譜特性、指向特性和聲級變化.研究發現,起落架噪聲的頻譜是由寬頻隨機噪聲與一些較為明顯的單音噪聲源組成,起落架噪聲的指向性類似於一個水平放置的偶極子.不同飛機起落架噪聲的聲級相差較大,這說明可以通過重新結構設計降低起落架噪聲。Under heavy security and before hundreds of cameras, the airbus a380, the world ' s largest passenger aircraft, made a relatively quiet landing on the runway at jfkinternationalairport in new york
在重重保衛和成百個攝像機鏡頭前,空客a380 ,世界上最大的民用飛機,在紐約肯尼迪機場的跑道上安靜地降落。Under heavy security and before hundreds of cameras, the airbus a380, the world s largest passenger aircraft, made a relatively quiet landing on the runway at jfk international airport in new york
在嚴密保全措施下,全球最大的客機? ?空中客車a380在數百架照相機之前,靜靜地平穩降落在紐約jfk國際機場的跑道上。Because the israeli raids have damaged beirut ' s airport, rice ' s official plane landed in cyprus and she helicoptered with aides and reporters from there to beirut, reversing the journey made by thousands of americans who have fled lebanon during the past 10 days
由於以色列的襲擊損毀了貝魯特機場,賴斯的專機降落在塞普勒斯,並與其隨員和記者從那裡乘直升飛機沿著與過去10日來數千美國人逃離黎巴嫩的旅程相反的路線前往貝魯特。分享友人