飛機噪聲 的英文怎麼說
中文拼音 [fēijīzàoshēng]
飛機噪聲
英文
aircraft noise-
The noise of the aeroplane deafened us.
飛機的噪聲使我們耳朵聽不見了。Measurement of noise airworthiness verification to the light propeller airplane
小型螺旋槳類飛機的適航噪聲驗證測量方法To sum up, tested and validated by data sets of shenzhou iv unmanned spacecraft and precise orbit ephemeris, the algorithms presented in the thesis can improve orbit accuracy and reduce random noise considerablely. derived conclusions have important value for reference, and lay the firm technological foundation for future applications
總之，經過神舟四號飛船實測數據計算和精密星歷檢驗，表明本文提出的各種定軌方法可以較好的提高定軌精度，減少隨機噪聲，所得出的結論對于實際應用具有重要的參考價值，並為將來的應用奠定了堅實的技術基礎。A study on the influence of susceptive area around airport by aircraft noise
飛機噪聲對機場周圍敏感區域影響的探討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。Standard of aircraft noise for environment around airport
機場周圍飛機噪聲環境標準In order to analyze the influence of airplane noise on indoor sound environment in the vicinity of beijing international airport, different of buildings, such as villages, schools, offices, commercial building are choose as monitoring objects, the characteristic of sound insulation for building around beijing international airport are monitored and analyzed
摘要為較好的分析飛機噪聲對機場周圍居民室內聲環境的影響，研究選擇不同類型的民居房、學校（多層建築） 、基層機關辦公用房、商品房等為測試對象，對北京國際機場周邊地區建築物隔聲特性（插入損失）進行監測與分析，結果表明：現有民居、學校、機關辦公室的隔聲特性較差，商品房的隔聲效果較好。In huangshan city, east china ' s anhui province, an aircraft was required to change route on thursday afternoon, as parents worried the noise could affect their children ' s listening comprehension in the english test
周四下午安徽省黃山市，一架飛機被迫改變航線，原因是考生家長擔心飛機噪聲有可能會影響英語考試中的聽力測試。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。Research on airplane noise and the strategy of control
飛機噪聲及防治對策的研究Measurement of aircraft noise around airport
機場周圍飛機噪聲測量方法The monitoring and evaluation on the airplane noise in inner airfield
機場內部飛機噪聲監測與評價Measurement and assessment of aircraft noise ; quantities and parameters
飛機噪聲的測量和評定.數量值和參數The monitoring and evaluation on the noise pollution around a military airport
某軍用機場周圍飛機噪聲監測及評價D specification for frequency weighting for the measurement of aircraft noise d - weighting
飛機噪聲測量用頻率加權Measurement and assessment of aircraft noise ; determination of rating level of aircraft noise exposure
飛機噪聲的測量和評定.飛機發射噪聲等級的測定A test method comparison on the brainstem auditory evoked potentials and the audiometry methods testing aircraft noise - induced hearing losses
飛機噪聲性聽力損傷的腦干聽覺誘發電位及電測聽方法比較Measurement and assessment of aircraft noise ; aircraft noise monitoring systems within the meaning of article 19a of the luftverkehrsgesetz civil aviation law
飛機噪聲測量和評估.根據空中交通法規19a規定的飛行In this thesis, the major contributions of the author ’ s research work are as follows : at first, the classification of helicopter tail rotor noise sources and the existent method of helicopter noise research is introduced briefly
本文採用諧波分析法對直升機前飛狀態下的尾槳噪聲進行了理論分析研究。主要工作包括:本文首先簡要介紹了直升機噪聲的分類以及國內外直升機噪聲研究方法的現狀，總結了前人的研究成果。Based on the demand for noise control and protection, a study on the noise diffuse and intensity of military aircraft is carried out
摘要為滿足軍用飛機近場噪聲的控制和防護需求，對飛機噪聲的傳播和分佈特性進行研究。分享友人