time to second peak 中文意思是什麼
time to second peak
解釋
到達第二峰值的時間-
Because in the toy has sufficient, therefore from power cut time stands in the peak body weight 90kg grown - up touches when the place stops, needs at least after the test 70 second above slowly the time of fall, therefore cannot cause the damage to the child
因為玩具內有充足的空氣量，所以自停電時起站在最高點的體重90kg的成年人腳觸地時止，經測試至少需要70秒鐘的以上的緩緩下落時間，所以不會對兒童造成傷害。 -
After analyzed the basic principle of optimized noise reduction on tyre pattern, summarized three approaches to noise reduction. the first is trying to reduce size of single block or socket to reduce noise amplitude on time domain, the second is to adjust stripes sorting order and their interlace value to avoid noise - made by every single block - peak values on time domain overlayed and the last is to adjust ratio of blocks and sockets, ratio of stripe interval and stripe sorting order to avoid noise periodical distribution and abnormal high peak values in some frequency strip
論文第四章分析了輪胎花紋優化降噪的基本原理，總結出三條降噪途徑：在允許范圍內盡量減小單個塊或槽的大小、刻刀槽軟化花紋塊來減小噪聲時域波幅度；調整節距排列順序、花紋條之間的錯位值，使各發聲單元發出的聲壓時域波形的同向峰值錯開，避免同向峰值疊加；調整花紋塊和槽比例、節距比例、節距排列順序，盡量避免周期性分佈，使輪胎所發出的噪聲趨于白噪化，避免某些頻段的異常高峰值。 -
The working principle of pulsed eddy current ( pec ) nondestructive testing technology is analyzed, the pec testing system was been established to examined the specimen of multi - layered aircraft structure, peak and zero - crossing time of the time domain transient response signal of pec are extracted as the features to detect the corrosion in the second layer of aircraft structure quantificationally, the experiment results are consistent with that of the theory analysis, as the pec have the advantages of fast speed and quantification, this makes the method have the broad using foreground in the testing of aircraft structure corrosion
摘要對脈沖渦流無損檢測技術的工作原理進行了分析，建立了脈沖渦流的檢測系統對加工的模擬飛機多層結構的試件進行了測試，提取其時域瞬態感應信號的峰值和過零時間作為特徵量，對出現在飛機多層結構第二層中的腐蝕缺陷進行了定量檢測，試驗結果和理論分析相一致，證明了脈沖渦流檢測方法的有效性，由於其具有快速和定量化的優點因而在飛機結構的腐蝕檢測中具有廣闊的應用前景。 -
From absorption spectra and the second - order derivative spectra, three absorption speaks of excitons were clearly resolved. at the same time, the first exciton absorption peak got stronger with decreasing nanocrystals size. blue shifts due to quantum confinement were observed obviously
納晶吸收譜及二次微分譜的測量結果表明，納晶在室溫出現了三個激子吸收峰，第一激子吸收峰隨納晶半徑減小而增強，同時清楚地觀察到納晶受限導致的光譜藍移。
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