noise investigation 中文意思是什麼

noise investigation 解釋
噪聲查驗
  • 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〉...
  • investigation : n. 1. 研究，調查；審查。2. 研究論文，調查報告。
  1. In this paper, the author established the model of objective evaluate parameters of sound quality and develope d an objective evaluation system which could give quantitative objective evaluate parameters, such as loudness, sharpness, roughness, psychoacoustics annoyance ( pa ) etc. paper also describes an subjective evaluation investigation ir " " hich 16 subjects used pair comparison statistical evaluation methods to evaluate the noise character of room air - conditioners, the results show that there is generality good agreement between quantitative objective evaluate sound quality parameters and subjective evaluation. at the same time an example of application of the technique to improve the noise character of room air - conditioner is offered

    此外本文還介紹了一個應用聲質量評價技術改進kfr - 50hw / e2d空調器聲質量的實例，通過對空調器室外機管系、導流罩、出風網等進行改進，空調器的聲質量得到了明顯改善：在室外風量提高164m ~ 3 / h情況下，聲音響度下降16 ，波動強度明顯改善，尖銳度指標也略有下降，作者同時總結了不同改進措施對產品聲質量影響的方式，以期為今後的聲質量改進提供借鑒。
  2. The investigation has declared that the fuel injection with bq fuel pump had higher injection pressure, bigger fuel supply rate and shouter fuel supply duration, which would cause the fuel injection quantity and the fule - air mixture to increase during ignition delay period, the pre - mixed combustion to become acutely, and finally result in increased power levels of noise

    研究表明，裝配bq噴油泵，噴油系統的噴油壓力較高，供油速率較大和供油持續時間縮短，使得滯燃期的噴油量增加，滯燃期內形成的可燃混合較多，預混燃燒劇烈，導致整機噪聲聲功率級增加。
  3. Investigation on the noise damage in key industrial enterprises in zi chuan

    淄川區重點工業企業噪聲危害調查
  4. Through an investigation of cavitation of ultrasonic wave cleaning, the cause of cavitation noise and its effect factors are analysed, and some advices to reduce the influence of cavitation noise to environment are proposed

    摘要通過對超聲波清洗中空化現象的研究，分析了空化噪聲產生的原因和影響因素，提出一些減小空化噪聲對環境影響的方法。
  5. The expected noise level calculated by this model confroms to the measured noise level. and we carried out noise annoyance investigation by sending out larges of questionnaires in different noise sensitive regions such as residential quarters and schools in order to know the effects of combined overhead road noise on subjective annoyance. by aulyztng the relationship of the annoyance effective factors ( noise effective factors and non - noise effective factors ) and noise annoyace, the mainly effective factors were maken out

    同時針對不同的敏感區域，進行了大量地高架復合道路噪聲主觀煩惱度調查研究，通過對噪聲因子及非噪聲因子與主觀煩惱度的相關關系分析，確定影響高架交通噪聲主觀煩惱的主要的非噪聲因子，並建立了噪聲煩惱度的預測模型，得出了不同敏感區域的高架交通噪聲的煩惱度閾值。
  6. Firstjap background and nkr front axle assembly line problems, non - meet demands and unbalance, is introduced, and modapts is suitble and important for the development of assembly line. secondly, theorials on work study, set time standards and process balance is reviewed, and current workshipment, operation motion capability. balance rate is revealed based on the investigation. according to work study theory, typical seven motions analysis is detailed, and operation method standards is designed. according to the human - machine theory, noise, light, tools, facilities factors is analysised, and conditions reducing production rate is advanced

    本論文採用理論與實踐相結合的方法，運用工業工程、人機工程學有關工作研究、方法研究、勞動定額、模特排時法等理論和方法，在分析大量文獻資料的基礎上，參考國內外在工業工程方面的最新研究和應用成果，對江鈴車橋廠nkr型汽車前橋裝配線的組織設計進行了系統的重組和優化設計研究。
  7. Based on the noise influence ' s investigation and analysis in one of yichun ' s hospital ' s building construction, the writer does some research and finds some possible solution to prevent and reduce the noise influence

    通過對以宜春市某醫院建築工程施工過程中噪聲對附近人群的影響的分析和調查，對減噪防噪問題做了一些探討，提出了一些可操作的方案。
  8. In this paper, a theoretical investigation of the drag and noise reduction by riblets is carried out, and these numerical results are compared with those obtained from experiments with riblets in water tunnel, and it is found that they agree with each other in tendency and numerical value

    本文從理論上分析了條紋表面的減阻降噪特性，並將計算結果與水洞模型貼膜實驗進行了對比，兩者在趨勢和數值上基本一致。
  9. Experimental investigation of noise reduction on torpedo model by using the gas bubble screen technique

    魚雷氣幕屏蔽及模型降噪試驗研究
  10. In this paper, optic gyro is viewed as the object of investigation and several aspects is investigated as follows. two important indexes - bias instability and scale factor were measured and investigated, including bias, its repetitiveness, temperature sensitivity, random walk coefficient and scale factor, its nonlinearity, asymmetry, repetitiveness. we make use of the allan variance method to separate the noise factors which affect the performance of the optic gyro, such as the angle random walk, bias instability, rate random walk, rate ramp, quantization noise, markov noise and sinusoidal noise

    本文以光學陀螺為研究對象，開展了以下幾方面的研究工作：本文對光學陀螺性能的兩個重要指標?標度因數和零偏穩定性進行了較為詳細的研究，其中包括陀螺的零偏b _ 0 、零偏重復性b _ r 、零偏溫度靈敏度b _ t 、隨機遊走系數rwc和標度因數k 、標度因數的非線性k _ n 、標度因數不對稱性k _ h 、標度因數重復性k _ r等等。
  11. Building construction noise investigation and preventive measures

    點鈔機減振降噪的研究
  12. The other has two metal - insulator - semiconductor ( ms ) contacts with lower leakage current ( less than 4 pa, 300v ) and better energy resolution ( about 10 % fwhm for 241am 59. 5kev line ) and poor working stability. in theoretical studies, the analysis on the phase equilibrium in the vapor growth of cdse single crystals shows that the stoichiometry of cdse crystals can be controlled effectively by controlling the stoichiometry of starting materials and the vapor growth temperature. besides, the investigation of the transporting properties of charge carries in cdse detectors indicates that the noise in energy spectrum detected by using the detectors with msm structure is caused by the hole injection, which is induced by electron injection and the light injection

    本文把cdse單晶體的生長、單晶體的成分、單晶體的性能以及單晶體在室溫核輻射探測器中表現出來的性能結合起來進行了比較系統的研究；採用垂直無籽晶氣相提拉法生長出了電阻率為10 cm量級、尺寸為中10mm 30mm的單晶體；制備出了能量解析度達10 （ fwhm ） （對~ （ 241 ） am59 . 5kev譜線而言）的cdse室溫核輻射探測器，取得了較好的研究結果。
  13. An investigation on liquid - born noise control in water management system

    水管理系統噪聲控制研究
  14. Furthermore, investigation of the source of noise and vibration is also an important issue. these problems can be solved in a direct and economical way with the correct approach to controlling their sources. this can be applied, for example, to techniques of train and rail construction, as well as wheel track mutual resistance

    所以，本次捷運研討會特別訂定減振制噪之專題討論，邀請國內外噪音與振動之專家學者參與研討改善建議，亦邀集其他以輪軌系統建設之國家與城市共同分享心得，並期望各項先進科技與發展趨勢能納入本局未來捷運工程之努力方向。
  15. The paper also analyzes synthetically the effects of some smooth filters prior to image segmentation and indicates that gaussian lowpass filter, a alterable scale filter, is a good choice to establish a balance between the reservation of image details and removal of noise. on the basis of current investigation of actuality and trend of image segmentation at home and abroad, the paper adopts marr operator, called by optimal edge detection to improve greatly efficiency of image segmentation and edge abstract. the sparse edge

    論文在分析當前圖象分割的現狀和趨勢的基礎上，採用被稱為最佳邊緣檢測運算元的marr演算法，使圖象分割和邊緣提取的準確性得到了很大的提高；利用人機交互輔助的方法來搜索已經檢出的稀疏邊緣點，並用最小二乘法擬合這些邊緣點，使裝配間隙寬度的測量的精度和準確性得到了極大的保證。
  16. Investigation on noise induced hearing loss for locomotive drivers in wulumuqi railway board

    烏鐵局機車乘務員噪聲性聽力損傷調查
  17. Experimental investigation on noise characteristics of jets impinging on concave and convex plates

    凹凸板沖擊射流噪聲特性的實驗研究
  18. Investigation on noise during non - steady working condition of a small swirl chamber diesel engine

    小缸徑渦流室柴油機非穩態工況噪聲研究
  19. The sound intensity measurement is carried out for the exterior radiation noise of an automobile and by means of spectrum and correlation analysis of noise signal, an investigation into the application of sound intensity measurement to vehicle noise control is presented. for the main noise sources of automobile - noise of the engines made a distinguish analysis technology and various noise control measures. it is beneficial reference to reduce noise of engine

    本文依據聲強測量的原理，以汽車噪聲源的分析為應用對象；通過對汽車的車外輻射噪聲進行了聲強測試並對噪聲信號進行頻譜分析和相干分析，研究了聲強測量系統在汽車噪聲控制中的應用問題；論述了汽車發動機噪聲的鑒別分析技術和各種控制措施，為發動機噪聲的降噪工作提供參考。
  20. Abstract : based on an investigation of some projects involving vav air conditioning systems in shanghai, describes the general status of these projects, system modes, air distribution, indoor air quality, noise control, duct design and automatic control, and predicts the future prospect of vav system application

    文摘:介紹了對上海地區採用變風量空調系統的部分工程的調研情況，分析總結了工程概況、變風量系統的方式、氣流組織、室內空氣品質、噪聲控制、風道設計、自動控制等，對其應用前景作了展望。
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