ambient density 中文意思是什麼
ambient density
解釋
周圍介質密度-
6 the zn3n2 is prepared on focus glass substrate at low temperature. and for the first time, a p - zno with a carrier density of 1017 ? cm - 3 is obtained by thermal zn3n2 in an oxygen ambient
5 、用等離子體增強的化學汽相沉積的方法制備了zn3n2薄膜，首次通過熱氧化zn3n2的方法，制備出了受主型載流子濃度為1017cm - 3的p - zno薄膜。 -
In the third chapter, the influence of current density, solution concentration, erosion time and aging in ambient air on the pl spectra of ps suggests that peak would blue shift with current density increasing, and with erosion time and aging time prolonging ; with the increasing of solution concentration, peaks would red shift when solution concentration less than 1 : 1 but blue shift when solution concentration greater than 1 : 1. above phenomena can be explained by quantum confinement and light center model, but do not deny the action of si - h bonding and defect on the surface in the process of photoluminescence. at present, radiation mechanism is still one of the primary problems in the study of ps
在第z三章中；通過對比，分析了電流密度、陽極化時間、溶液濃度以及自i然氧化時間對多孔硅光致發光光譜的影響，認為在一定的范圍內，多i孔硅的發光峰位會隨電流密度的增大而藍移，要獲得較強的發光，需z要選擇合適的電流密度；隨著腐蝕時間的延長，多孔硅的發光峰位會i發生藍移；當f酸的濃度較小q ： 1 ）時，峰位隨濃度的增大表現為向i低能移動；而當f酸的濃度較大河山時，峰位隨濃度的增大則表現z為移向高能；多孔硅在空氣中自然氧化；其發光峰位發生藍移，而強i度隨放置時間的延長而降低。 -
The company has imported advanced equipment and can produce 200 - litre annular barrel by using high density polyvinyl resin which is of high rigidity and abradability and can bear ambient pressure
該公司獲得專利技術，進口設備、採用具有鋼性大，耐磨性及耐環境壓力等特點的高密度聚乙烯樹脂生產200升環型塑料桶。 -
3. the frequency differences are determined by both the power spectral density ( psd ) and cepstrum of ambient vibration measurements. a matlab - based toolbox is developed, in which the differences of the higher adjacent frequencies can be easily evaluated
3 .使用功率譜頻差法和倒頻譜頻差法，開發了基於matlab平臺的斜拉索環境振動基頻識別gui工具箱。 -
Thus it is considered that the technique of dz formation by means of rtp may not be suitable for heavily boron - doping cz silicon. since the higher concentration vacancy could decrease the stress inducing by oxygen precipitates, the size of the oxygen precipitation with higher density was smaller in the hb si samples in comparison with the samples without rtp pre - annealing. moreover, as for the technique to generate dz by rtp in lightly boron - doping samples, it was found that the behavior of oxygen precipitation and dz was determined by the annealed temperature, followed annealing and ambient of rtf as well
結果顯示，對于普通輕摻矽片能形成明顯的很寬的潔凈區的rtp預處理工藝，應用於重摻硼樣品時沒有潔凈區形成，所以rtp預處理獲得潔凈區的工藝不適用於重摻硼矽片，硼的大量摻雜對氧沉澱促進效果大於高濃度的空位對氧沉澱的洲排浙江大學碩士學位論文李春龍：直拉重摻硼硅單晶中氧沉澱的研究促進效果；大量空位的引入，有利於釋放氧沉澱生長過程的內應力，適當增加重摻硼樣品氧沉澱密度，減少其尺寸，並伴有層錯生成。 -
We tested the ambient temperature compressive strength, the ambient temperature bending strength, volume density and the porosity of the sintered composites. by means of the om, sem, and x - ray, we analyzed the composites micro - structure ; we studied the dispersion methods & the mechanism of damage of the fiber ; we also did research on the reinforced mechanism and the fabrication characteristics of the fcmc
測試燒后試樣的常溫耐壓強度、常溫抗折強度、體積密度、氣孔率，並藉助于光學顯微鏡、掃描電鏡以及x射線衍射圖象對復合材料微觀結構進行了分析，探討了復合材料中纖維的分散方法、纖維的損傷機理、纖維增強al _ 2o _ 3復合材料的增強機理和及制備特性。 -
As a classical and practical method in ambient vibration experimental modal analysis, auto - cross spectrum density method replace the frequency response function with power spectrum and achieve its mode shape from transmissibility between the response signals and reference signal
自互譜法作為環境激勵實驗模態分析的一種實用的經典方法，用響應點和參考點間的功率譜曲線來代替頻響函數曲線，並由響應點和參考點之間響應的傳遞率得出振型。
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