noise level measurement 中文意思是什麼

noise level measurement 解釋
噪聲電平測量
  • 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〉...
  • level : n 1 水平儀，水準儀；水準測量。2 水平線，水平面；水平狀態；平面，平地。3 水平，水準；水位；標準；...
  • measurement : n. 1. 測量，計量，量度。2. 份量，尺寸，大小，寬度，厚度，深度（等）。3. 測量法。 measurement goods （按體積、容積計算的）體積貨物。
  1. Shipbuilding - measurement of noise level on board vessels machinery part

    造船.船上容器
  2. But this is not a problem for ship structure which is thin and good ductibility. the basic equation of statistical energy analysis is deduced in this paper, the shipboard noise of 295, ooodwt vlcc is calculated based on sea, the factor effect on the noise of shipboard is discussed and some measurement to reduce the noise level is suggested

    根據統計能量分析方法的基本原理，以實船為例進行了船舶機械設備等噪聲聲壓水平的估算和船舶艙室噪聲預示，並對影響船舶艙室噪聲水平的各種因素進行了分析，提出了減小船舶艙室噪聲水平的方法。
  3. Noise level measurement in sound systems

    音響系統中的噪聲級測量
  4. Air conditioners, heat pumps and dehumidifiers with electrically driven compressors. measurement of airborne noise. determination of the sound power level

    帶電動壓縮機的空調器熱力泵和除濕器.機載噪音的測量.噪音等級的測定
  5. Air conditioners, heat pumps and dehumidifiers with electrically driven compressors - measurement of airborne noise - determination of the sound power level

    帶電驅動壓縮機的空調加熱泵和除濕器.空氣噪聲的測量.聲功率水平的測定
  6. Air conditioners, heat pumps and dehumidifiers with electrically driven compressors - measurement of airborne noise - determination of the sound power level ; german version env 12102 : 1996

    空調器熱力泵和帶電動壓縮機的除濕器.載氣噪聲測量
  7. Then analytical measurements of the noise were carried out on both of the turbines by means of modern acoustic apparatus and a conclusion has been found that the noise of the concentrated wind energy turbine is lower than the one of the ordinary wind energy turbine and the root of the trouble to cause noise chiefly originates from the turbine blade. besides, the result of analytical measurement also reveals that the power output both of the wind energy turbines will increase with the increase of the wind speed and unfortunately does the noise too. in order to lower the noise, a measures of noise reduction have been advanced that an active method is to develop a wind energy turbine run at a lower rating of wind speed while the passive method is to adopt a board drilled tiny holes, having established a sound technological basis for the development of a kind of wind energy turbine of low noise and high level in the world

    主要對濃縮風能型風力發電機在正常運轉時，噪聲產生的機理進行了理論分析研究，並與普通型風力發電機的噪聲進行了對比實驗分析；利用現代聲學測試手段對兩類機型進行測試與分析，得出濃縮風能型風力發電機產生噪聲低於普通型風力發電機和葉輪是風力發電機產生噪聲的主要部件的結論；通過對兩類機型的噪聲、輸出功率的測試，得出隨著風速的增加，兩類風力發電機的輸出功率在增加，產生的噪聲也在增加的結論；提出了進一步降低濃縮風能型風力發電機噪聲的措施，從主動降噪方面，研製低額定轉速的發電機；從被動降噪方面，採用微孔穿板的降噪結構；為研究開發一種國際上低噪聲、高水平的風力發電機打下了良好的技術基礎。
  8. 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
  9. Specification for sound level meters for the measurement of noise emitted by motor vehicles

    機動車噪音測量用聲級計規范
  10. The prediction of the noise level in the cabin and work space at design stage is aiming to make effective measurement to control the noise level in advance to meet the regulations and ship owner ' s needs, which can avoid incidental expanses in the remediation and modification, so as to shorten the period and cut the construction cost of ship. in order to predict the noise levels in the ship superstructure cabin, the two methods are discussed in this paper, such as the grey prediction method and the acoustics analysis in fem method

    如果能在船舶設計開發的初期就能對其艙室、工作空間的噪聲值進行預測，對不滿足相關規范或船東要求的部位提前採取有力的措施，不僅能有效的達到減少艙室噪聲的目的，還能避免在船舶建造完成後因採取補救和改動措施而造成的巨額開銷，從而縮短了造船周期，降低了造船成本。
  11. For continuous monitoring of noise, sound level monitors are installed on site for round - the - clock measurement

    為了不斷監察噪音水平，數碼港地盤內會裝設音量監測器，廿四小時進行測量。
  12. Measurement of audio - frequency noise voltage level in sound broadcasting

    聲音廣播中音頻噪聲電平的測定
  13. 3. the effect of measurement error is considered as gauss white noise. through theoretical analysis and numerical simulation, damage assessment results are also subject to gauss distribution. furthermore, results indicate that the mean keeps intact, but the standard deviation is linear to error level

    3 、將測量誤差的影響考慮為正態分佈的高斯白噪聲，通過理論分析和數值模擬，說明用靈敏度分析法識別結構損傷時，損傷識別結果也服從高斯正態分佈，其平均值保持不變，而方差則與誤差水平成線性關系。
  14. If an item of qpme operated under a cnp is suspected to be emitting excessive noise due to poor performance, modification or alternation, the cnp holder would be asked to conduct noise measurement to verify its sound power level

    已取得建築噪音許可證的某項優質機動設備，如懷疑因表現欠佳機件改裝或改動而發出過量噪音，建築噪音許可證持有人便需量度噪音以核實其聲功率級。
  15. We get and analysis the data of the reverberation, noise and acoustic pressure level of the conference hall and lecture hall in some northern university in measurement

    實測和分析了北方某大學的甲報告廳和乙會議廳的混響時間、背景噪聲、聲場級等數據。
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