熱密度波動 的英文怎麼說
中文拼音 [rèmìdùbōdòng]
熱密度波動
英文
thermal density fluctuation-
In section one, by using fice scheme and time - gcm, a model of trace gases and oh airglow affected by gravity wave is set up, then the propagation of nonlinear gravity wave and the effect on trace gases and oh airglow are analyzed. the result shows gravity wave excited by tropospause forcing can propagate stably to the mesosphere through the stratosphere so that energy and momentum can be transferred from one region to another. in this process, gravity wave undergoes growth, overturning, convection and breaking
在第一部分的工作中，利用全隱歐拉格式和全球熱層-電離層-中間層-電動力學環流耦合模式（ time - gcm ） ，對重力波的非線性傳播及其在傳播過程中對中高層大氣中氧族和氫族成分和與之密切相關的oh氣輝輻射的影響進行了數值模擬，結果表明，從對流層向上傳播的重力波經歷了產生、發展、飽和、對流產生直至破碎的非線性演化，大氣的非等溫結構加速了重力波在中層頂區的破碎，重力波的非線性傳播是小尺度對流和湍流產生的一個重要的源。In this paper, nanosized al2o3 ceramic particles were chose as reinforcing phase. enhanced with ultrasonic wave the particles were covered with copper using method by electroless plating, the copper - matrix composite was developed by hot - press sintering process of the composite powder. the composition, microstructure, hardness, density and dry sliding wear property of the new material have been studied
研究路線為：選用納米級al _ 2o _ 3陶瓷顆粒作為增強相，在超聲波的環境中用化學鍍的方法完成對納米al _ 2o _ 3陶瓷顆粒表面的金屬銅包覆，採用熱壓燒結成型技術以復合粉末為原料制備成納米al _ 2o _ 3陶瓷顆粒增強銅基復合材料，研究分析復合材料的成分、組織結構、硬度以及緻密度，對試樣進行了干滑動摩擦磨損實驗。The big bang model, which states that almost 14 billion years ago the universe started expanding from a state of extremely high density and temperature, is able to explain galaxy motions, the abundance of hydrogen and helium, and the properties of the cosmic microwave background ( cmb ), the remnant heat from the expanding and cooling gas
大霹靂模型指出，宇宙于約140億年前自極度高溫、高密度的狀態開始擴張，這理論不但可以解釋星系運動以及宇宙中氫與氦的含量，而且還預測了宇宙擴張時，冷卻中氣體的殘餘熱輻射，也就是宇宙微波背景的各項性質。The physicochemical characterization was made in depth using various techniques for some resin matrices of advanced composites, such as epoxy resin matrix, phenolic resin matrix and bismaleimide resin. these techniques include infrared spectroscopy ( ir ), nuclear magnetic resonance spectroscopy ( nmr ), mass spectroscopy ( ms ), liquid chromatography ( lc ), thermal analysis ( ta ) and other techniques. the composition, structure, molecular weight, reactivity, reaction temperature and other properties related to performance of resin matrix were studied
本論文採用紅外光譜、核磁共振波譜、質譜、液相色譜、熱分析等分析技術對實際使用的環氧樹脂、酚醛樹脂以及改性雙馬來酰亞胺樹脂等先進復合材料樹脂基體進行了物理化學表徵，尤其是對與樹脂基體性能密切相關的化學組成與結構、分子量、活性與反應溫度、固化度等進行了表徵；提出了樹脂基體的固化反應機理，獲得了樹脂基體的固化反應動力學參數；對改性雙馬來酰亞胺樹脂的熱分解機理進行了分析，並得到了其熱分解動力學數據。However, whether the conclusion could be applicable to porous samples with larger porosities needs to be further verified by experiments. in brief, this work has used shock wave experimental, thermodynamic and md method to study the hugoniot curves of 6. 151 - 6. 725mg / m3 porous iron
綜上所述，本文採用沖擊波實驗、熱力學理論方法和分子動力學方法對初始密度為6 . 151 - 6 . 725g / cm ~ 3的多孔鐵樣品沖擊壓縮特性進行了研究。The main conclusions show as following : 1 the effects of propagating vortex rossby waves on tc intensity change are relative closely to the position, the size and intensity of the initial disturbance
主要結果可歸納如下： 1渦旋rossby波傳播對熱帶氣旋強度變化的影響，與初始擾動相對渦旋中心的位置、初始擾動尺度大小及強度等關系密切。分享友人