background-noise level 中文意思是什麼

background-noise level 解釋
背景噪聲電平
  • background : n 1 後景，背景；基本情況；（紡織品等的）底子；出身；經歷。2 隱蔽的[不引人注目的]地位；幕後。3 襯...
  • 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；...
  1. The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.

    聲發射源與接收訊號傳感器間的距離以及環境噪聲的電平是選擇頻帶的主要依據。
  2. The main experiments : the relationship between the sonic intensity and the pressure of the steam that leak out of the boiler ; the relationship between the level of the intensity of the leak noise and the capability of boiler ; the effect that wave - guide tube has on the detection of leak noise ; the specialties of sonic intensity level of background noise and distributing in frequency

    主要實驗內容為：泄漏噪聲聲強級與泄漏蒸汽壓力之間關系；泄漏噪聲聲強級與鍋爐容量的關系；泄漏噪聲聲強級與泄漏孔徑的關系；波導管對泄漏噪聲測量的影響；爐內背景噪聲的聲強級和頻域分佈特點。
  3. 1 noise : the greatest volume of noise normally occurs on straight sections when trains pass at their highest speed. whereas noise from mrt trains is masked by the background noise of heavy daytime traffic, at nighttime the level of noise is significantly more obvious

    （ 1 ）噪音部分：捷運直線高速行駛路段之噪音最高，因日間交通量大，道路交通噪音亦大，故捷運音量較不明顯，于夜間捷運車輛行駛之噪音則較明顯。
  4. At first, carrying on varying the gray level of the picture which is gathered by ccd system in order to strengthening the contrast ratio between the target and background ; and smoothing the picture in order to getting rid of the noise which is produced by gathering and transmitting, so that we can detect the edge easily

    文中首先對ccd系統採集進來的圖像，進行灰度變換，增強靶標與背景的對比度；並對圖像進行平滑處理，去除圖像採集和傳輸中混入的噪聲，以利於圖像的邊緣檢測。
  5. 1 noise : the greatest volume of noise normally occurs on straight sections when trains pass at their highest speed. whereas noise from mrt trains is masked by the background noise of heavy daytime traffic, at nighttime the level of noise is significantly more obvious. on curved sections and cornered sections and on sections close to stations, the impact of noise on the neighborhood is much lower

    以列車行進于地下隧道段時，輪軌滾動噪音經封閉空間所傳回車廂，使乘客感受到的噪音，與列車行駛于平面、高架及出土段時，沿線非乘客感受到的移動式空傳噪音最為迫切有待解決之課題；
分享友人
分享到 Line

分享到臉書