noise emission 中文意思是什麼

noise emission 解釋
噪聲發射
  • noise : n 1 聲音，聲響。2 叫喊；嘈雜聲，噪音；喧鬧聲；吵鬧，騷動，騷擾。3 〈古語〉謠言，風聲。4 〈美國〉...
  • emission : n. 1. （光、熱、氣體等的）發出，發射，射出，放射；傳播。2. （紙幣等的）發行；發行額。3. 發出物，放射物。4. 【醫學】排出；遺精。
  1. With its newly developed diffuser, the ksb group has managed to lower by 20 db the noise emission of a large pump produced 21 years ago in what was then the gdr

    通過最新研製的消聲器，凱士比公司成功將21年前生產的一臺噪音很大的大型機泵的聲音降低了20分貝。
  2. Of the criteria adopted in 1973 for determining the noise emission standard for pump rooms in buildings

    在一九七三年釐定大泵房發出噪音標準的準則為何
  3. Noise emission testing labeling

    噪音擴散測試與標注
  4. 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。
  5. Method for laboratory tests on noise emission from appliances and equipments used in water supply installations

    給水裝置中裝置和設備噪聲的實驗室試驗方法.第1部分:測量方法
  6. Method for laboratory tests on noise emission from appliances and equipments used in water supply installations - part 2 : mounting and operating conditions for draw - off taps and mixing valves

    給水裝置中裝置和設備噪聲的實驗室試驗方法.第2部分:排水閥和混合閥的安裝和操作條件
  7. Acoustics - declaration and verification of noise emission v of machinery and equipment

    機器和設備噪聲發射值的標示和驗證
  8. Acoustics - declaration and verification of noise emission values of machinery and equipment

    聲學機器和設備噪聲發射值的標示和驗證
  9. Measurement of noise emitted by machines - airborne noise emission enveloping surface method - part 23 : gear transmisson

    機器噪聲測量.空氣噪聲發射包絡面法.第23部分:齒輪傳
  10. Acoustics. statistical methods for determining and verifying stated noise emission values of machinery and equipment. part 3 : simple transition method for stated values for batches of machines

    聲學.對機械與設備規定噪聲發射值的測定和驗證的統計方法.第3部分:規定各批機械噪聲值的簡易方法
  11. Acoustics. statistical methods for determining and verifying stated noise emission values of machinery and equipment. part 1 : general considerations and definitions

    聲學確定和檢驗機器設備規定的噪聲輻射值的統計學方法第一部分:概述與定義
  12. Acoustics. declared noise emission values of computer and business equipment

    聲學.計算機和商業設備噪聲申報值
  13. 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。
  14. Measurement of noise emitted by machines ; airborne noise emission ; enveloping surface method ; outboard motors

    機器排放的噪聲測量.空氣傳播的噪聲.第57部分:包洛面
  15. Measurement of noise emitted by machines ; airborne noise emission ; enveloping surface method ; hydraulic assemblies

    機器排放的噪聲測量.空氣傳播的噪聲.第41部分:包洛面
  16. Measurement of noise emitted by machines ; airborne noise emission ; enveloping surface method ; surface treatment plants

    機器排放的噪聲測量.空氣傳播的噪聲.第49部分:包洛面
  17. Measurement of noise emitted by machines ; airborne noise emission ; enveloping surface method ; hydraulic assemblies test report specimen form

    機器排放的噪聲測量.空氣傳播的噪聲.第41 bb . 1部分
  18. Measurement of noise emitted by machines ; airborne noise emission ; enveloping surface method, reverberation room method and in - duct method ; fans

    機器排放的噪聲測量.空氣傳播的噪聲.第38部分:包洛面
  19. Acoustics - laboratory tests on noise emission from appliances and equipment used in water supply installations - mounting and operating conditions for draw - off taps and mixing valves

    聲學.由供水設施和設備發出噪音的實驗室試驗.放水龍頭和混合閥的安裝和工作條件
  20. An eec type - examination certificate, an ec declaration of conformity or a noise testing report issued by a corporate member of the uk institute of acoustics certifying that the equipment complies to noise emission standards

    歐洲經濟共同體類別認可證書、歐盟符合宣告書或英國聲學學會正式會員發出的噪音測試報告，以證明有關的設備符合噪音標準。
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