weak light source 中文意思是什麼

weak light source 解釋
弱光源
  • weak : adj 1 柔弱的；虛弱的，有病的。2 無力的，軟弱的；（根據等）不充分的，薄弱的。3 不中用的；愚鈍的；...
  • light : n 1 光，光線；光明，亮光 （opp darkness） Hang the picture in a good light 把那幅畫掛在能看清楚的...
  • source : n 1 源頭，水源，源泉。2 根源，本源；來源。3 原因；出處；原始資料。4 提供消息的人。5 血統。vt 〈美...
  1. In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source

    摘要基於李家峽水電站雙排機組振動的現場試驗研究，並且針對傳統頻譜分析方法傅立葉變換（ fft ）對于非平穩信號已力不從心這一缺陷，利用小波分析方法在時域和頻域上同時具有良好的局部化性質，通過對開停機這一典型非平穩過程信號進行小波及小波包分析，將其分解到不同頻帶內，獲取微弱信息和提取優勢頻率，並對其作振源分析，得出開停機初始時刻因水流不穩均出現強烈的振動現象，且低頻段信號能量最大，開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。
  2. The light source adopts usa 5w high luminance led, which is energy saving ang highly effcient, whit service life reaching100 thousand hours. the reflector adopts high - tech surface treatment technology whit high reflection efficiency. the lighting distance of lamp can reach more than 250m and it can be shifted to lighting of weak light lasting 10 hours

    光源採用美國5w高亮度led ，節能、高效、使用壽命長達10萬小時，反射器採用高科技表面工藝處理，反光效率高，燈具照射距離可達250米以上，還可以調到弱光連續使用10小時。
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