sound level 中文意思是什麼

sound level 解釋
聲級，用一定的儀表特性和
  • sound : adj 1 健全的；強壯的，正常的；完好的，無疵的，沒有腐爛的（船、牙齒等）。2 正確的；正當的，合法的...
  • 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；...
  1. The sound level produced from your booth shall be limited to no more than 80 phons, as measured at a point 2 meters away from the border line of the booth

    自己展間的產生音量規定值為：從離開展間邊界線2 m的地方進行測量，測定值在80phon以下。
  2. Electroacoustics - sound level meters - specifications

    電聲學.聲級計.規范
  3. Electroacoustics - sound level meters - part 1 : specifications

    電聲學.聲級計.第1部分:規范
  4. Electroacoustics - sound level meters - pattern evaluation tests

    電聲學.聲級計.型式評定試驗
  5. Specifications for integrating - averaging sound level meters

    集成平均聲級測量儀規范
  6. An under estimation of the hearing effects by the low frequency noise could be happened. that is to say, even if the a - weight sound level is small, the low frequency noise may annoy to listener by the different ways from the high frequency noise. so it is necessary to understand psychoacoustics in order to make noise quality evaluations that match the subjective experience of the purchaser

    同時應用主觀評價方法?成對比較法（ paircomparisonstatisticalevaluationmethods ）對不同家用空調器噪聲進行主觀評價試驗，並與客觀評價結果進行了對比，結果表明：人主觀響應（煩躁程度）與各心理聲學評價指標之間均具有很高的相關性，相關系數一般均大於0 . 9 ，而與a計權聲壓級之間的相關系數只有0 . 78 。
  7. Product : tachometer 、 stroboscope 、 surface speed mter 、 anemometer 、 sound level meter 、 moisture meter 、 grain moisture meter 、 thickness meter 、 coating thickness meter 、 humidity meter 、 dew point meter 、 temp. meter 、 lux meter ect

    主要產品：主要產品：轉速表、風速表、聲級計、 （噪音計） 、水份儀（水分儀） 、溫濕表、露點儀、測厚儀、塗層測厚儀、溫度表、照度表、頻閃轉表等。
  8. If the volume level is too high, the speaker protection circuit activates, and the sound level drops suddenly

    如果音量電平太高，揚聲器保護電路即起作用而突然地減小聲音。
  9. Random - incidence and diffuse - field calibration of sound level meters

    聲級計的無規入射和擴散場校準
  10. Electroacoustics - random - incidence and diffuse - field calibration of sound level meters

    電聲學.聲級計的無規定射聲場及擴散聲場的校正
  11. Electroacoustics - random incidence and diffuse field calibration of sound level meters

    電聲學.聲級測量儀的隨機入射和散射區域的校正
  12. Electroacoustics - random - incidence and diffuse - field calibration of sound level meters iec 61183 : 1994 ; german version en 61183 : 1994

    電聲學.聲級計無規入射聲場及擴散聲場校正
  13. Its principle is as following : acquire and modulate the analog signals from sensors placed in environments through daq device on real time, then transit the information to computers by pci bus ; in the other hand, noise information tested with sound level meter is passed through interface rs - 232 to computers

    本系統工作原理為：通過多功能數據採集卡採集來自各種傳感器所採集的各檢測對象的模擬信號，對信號進行調理，通過pci系統總線傳遞給計算機；而噪聲則通過聲級計由rs - 232傳入計算機。
  14. Method of sound level measurement for industrial sewing machine

    工業用縫紉機噪聲測量方法
  15. Light vehicle exhaust sound level under stationary conditions, measurement of

    靜態條件下輕型車輛排氣聲級的測量
  16. Level recorders for recording sound level and or vibration level

    紀錄聲級和或振動級用能級記錄儀
  17. The two - year practices at some plants have proved that using the sound - level detecting slagforming state contributes to not only the control and optimization of steelmaking process, but also the assessment of the effect of spattering slag during spattering lining protection

    兩年的工廠實踐證明，利用音平檢測爐渣狀態，不僅有助於煉鋼過程的監控和優化，而且有助於判斷濺渣護爐時的濺渣效果。
  18. In this paper the train running noise level has been predicted with the theory of point sound source. the sound exposure level of a train set pass, equivalent continuous sound level and maximum sound level of a train set pass has been taken as estimate values, and some kinds of affixation attenuation on the course of noise propagation is considered, then the corresponding visual software has been developed. these make it convenient and precise to predict the noise level

    本文從點聲源的理論出發，對列車運行噪聲進行預測計算，採用一列車通過時的單發暴露聲級、時間特性的最大聲壓級和一定時間內的等效聲級等作為噪聲評價量，並考慮了噪聲傳播過程中的各種附加衰減，編制了相應的可視化軟體，使噪聲預測計算方便、準確。
  19. Electroacoustics - sound level meters - part 2 : pattern evaluation tests

    電聲學.聲級計.第2部分:型式評定試驗
  20. We did some analysis about the relativity between the vibration and the noise of the wheel. after the testing of the first line of guangzhou underground, we found that the existing wheel damper has nothing to do with the noise of wheel less than four thousands hz. compared of different contributions of the tread vibration and the web vibration on sound level of railway noise

    在實驗過程中，改進了對車輪的激振方式，利用單擺激振提高了激振力的精度;實驗分析了車輪阻尼器的結構、安裝方式及其動力學參數對車輪阻尼器降噪效果的影響;也分析了車輪振動與噪聲的相關性;現場測試廣州地鐵一號線的噪聲特性，確定了車輪阻尼器所要控制的頻率范圍;對比分析不同激振情況下，踏面徑向振動與輻板軸向振動對噪聲聲壓級的貢獻比例。
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