decay by time 中文意思是什麼
decay by time
解釋
日久腐爛-
Accidence discuss of water hunting by using half decay time method on island tundra
凍土帶上半衰時找水初探 -
During the process of orthodontia, we suggest using toothpaste, toothbrush and mouth wash at the same time until the end so that it can avoid the side - effects caused by orthodontia justlike periodontitis, gingivitis and tooth decay
正畸過程我們主張正畸專用牙膏牙刷和漱口水同時使用，並堅持整個過程的始終。這樣才能避免正畸后帶來的副作用：牙周炎牙炎或牙酸蝕問題。 -
Measurement of minority carrier life time in germanium by photoconductive decay method
用光電導衰減法測定鍺中少數載流子壽命 -
The dark decay of the spectral change was also studied. two recovery time constants were obtained by fitting. one is 2. 5 hours and the other is longer
研究表明這種紫外光誘導的電荷遷移帶變化是由於eu ~ （ 3 + ）離子周圍局域環境發生的變化引起的。 -
Experimental results are reported on temporal instability of phase - conjugate beam in a self - pumped ce : batio3 phase conjugator at 532nm. dark decay behaviors of sppc gratings in ce : batio3 are studied, for the first time to our knowledge, by measuring the decay of sppc reflectivities at 532nm and 790nm wavelengths at room temperature
首次在實驗和理論上研究了自泵浦位相共軛光柵暗衰減的特性，與以往一深一淺兩個陷阱能級參與光折變過程不同的是，發現了兩個深陷阱能級同時參與了自泵浦位相共軛光柵的建立。 -
The luminous intensity of phosphor - powder synthesized by this method is 32mcd / m2 after the sample was excitated 300s, and the decay time of the sample is 350min
該法制備出的發光粉激發后300s時的余輝強度32mcd m ~ 2 ，測量余輝時間為350min 。 -
Aimed at the helium damages in plutonium caused by a decay, he + ions were implanted in aluminum and the behaviors of helium in aluminum were investigated both theoretically and experimentally to simulate those effects in plutonium. at the same time, the diffusion of helium - 3 produced by tritium decay in stainless steels, which were served as the structural materials in tritium and fusion technologies, was also investigated in this thesis
針對放射性元素鈈的衰變引起的氦損傷問題，選擇模擬材料鋁進行了he的離子注入和其中氦行為的理論和實驗研究，同時，也研究了氚工藝及聚變堆技術結構材料不銹鋼中氚衰變~ 3he的擴散行為，從而對兩種金屬中he的行為有了較深入的認識。 -
We define the recombination time of excess electrons in p field as the minority carrier lifetime. in theory, we developed the equation between excess minority carriers lifetime and the open - circuit voltage decay ; moreover, the effect of capacitance to general open - circuit voltage is also investigated. both different efficiency solar cells are measured by the method and showed the relations between the minority carrier lifetime and the performance of solar cells, which provides great useful guidelines for fabricating high - efficiency silicon solar cell in industry
根據太陽電池的工作原理，詳細地論述了用脈沖光源照射n / p結太陽電池時光電壓的產生，理論上給出了注入p區的電子復合帶來的開路電壓與少子壽命的關系，也研究了n / p結勢壘電容放電對開路電壓衰減的影響關系，推導了利用開路電壓隨時間衰減的關系來測量少數載流子壽命的理論公式。 -
Based on the generalized dynamic inflow theory and classic non - steady aerodynamic loading theory, a real time model is obtained by establishing wake distortion and decay
在廣義動態入流理論的基礎上，基於經典非定常氣動載荷理論，建立了尾跡畸變和尾跡耗散的實時分析模型。 -
The long - time decay behavior of solutions of one dimensional 4th - order degenerate parabolic equation is studied by using the entropy function and energy estimate method
摘要利用熵函數並結合能量估計，研究了一維四階退化拋物方程解隨時間衰減的行為。 -
By studying the late - time evolution of massive scalar fields in the charged black hole - global monopole background, we find that the asymptotic decay of these fields is dominated by an oscillatory inverse power - law tail, and the decay is faster in the case
我們通過對在單極子荷電黑洞背景中有質量標量場後期演化的研究，發現振蕩反冪函數的衰減方式支配了有質量標量場的後期衰減。 -
We do this by measuring the distribution of time of decay - - " death " - - of individual atoms in a sample of the isotope
我們可以辦到這一點，方法是測量該同位素一個樣品的各個原子衰減的時間分佈（ 「死亡」 ） 。 -
The testing result of luminescent properties shows that the luminescent performance of the sample synthesized with sol - gel methods was better than the one synthesized with solid state reaction. the luminous intensity of phosphor - powder synthesized by sol - gel method is 65mcd / m2 after the sample was excitated 300s. and the decay time of the sample is 380min
對樣品余輝性能的測試結果表明，溶膠-凝膠法樣品較高溫固相法樣品余輝性能有很大提高，樣品在激發后300s時的余輝強度65mcd m ~ 2 ，測量余輝時間為380min 。
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