low density gas 中文意思是什麼
low density gas
解釋
稀薄氣體-
As explained by the following figure, gas in low pressure and low density will alter the light that passes through it. it is because the gas will absorb light at some particular wavelengths and re - radiate it in random directions. thus, after passing through the low pressure gas, the spectrum of the original white light will have dark lines, called
並不是所有光譜都是黑體輻射光譜，如下圖所示，低壓下的低密度氣體會改變通過它們的光線，這是由於氣體會吸收特定波長的光波並隨機向不同方向把所吸收的光線輻射出來，結果光線在通過低壓氣體后，原本的光譜上會出現很多稱為 -
The result shows that argon gas can not only promote the excitation of plasma at low pressure, but also improve discharge state, increase the density and activation of reaction radical and improve the quality of diamond films. on the other side, argon can cool the plasma and maintain low temperature of substrate due to its big ionization section and high collision probability with gas molecules
結果表明，氣體系統中引入氬氣一方面不僅有利於維持低壓放電，而且改善放電狀態，提高反應活性基濃度和活性，提高低溫沉積金剛石膜的質量；另一方面，由於其大的電離截面使其和電子碰撞的幾率大大提高，對等離子體進行冷卻，有利於基片溫度的降低。 -
By increasing the h2 dilution ratio, it is found that atomic hydrogen can selectively etch amorphous phase and stabilize crystalline phase. from the study on the distance from substrate to catalyzer, choosing a proper distance can ensure the gas fully decomposed, while a relatively low substrate temperature can cause the nanocrystalline particles to lose mobility and keep their sizes. the pre - carbonization process can enhance the nucleation density and make the growth of high quality nanocrystalline p - sic films much easier
實驗結果表明：隨著工作氣壓的減小，薄膜的晶粒尺寸有所減小；通過提高氫氣稀釋度，利用原子氫在成膜過程中起的刻蝕作用，可以穩定結晶相併去除雜相；選擇適當的熱絲距離能保證反應氣體充分分解，又使襯底具有較高的過冷度，是形成納米薄膜的重要條件；採用分步碳化法可以提高形核密度，有利於獲得高質量的納米- sic薄膜；襯底施加負偏壓可以明顯提高襯底表面的基團的活性，因負偏壓產生的離子轟擊還能造成高的表面缺陷密度，形成更多的形核位置。 -
All but three appear, by their great size and low density, to be gas giants
這些系外行星都是體積龐大且密度極低的氣態巨星，只有三個例外。 -
The conclusions are as follows : ( 1 ) high - pressure water - atomization can be used to produce a pre - alloyed steel powder with high apparent density, high green strength, size - stability after sintering and low hydrogen - loss content ; ( 2 ) the higher smelting temperature and / or water pressure, the finer particle size of steel powders ; ( 3 ) when the atomization angle holds in a reasonable value ' s range the obtained powder will have a better particle size distribution ; ( 4 ) an optimum atomization technological parameters : liquid steel flux, water pressure and water prick angle was obtained ( 5 ) reduction variables ( temperature, holding time, material - bed ' s thickness and reducing gas flux ) have a significant effect on the particle agglomeration and properties of final powder was given ( 6 ) different alloying methods were developed to modify properties of ferrous powder materials and hence to broaden its applications in ferrous powder metallurgy industry
本文系統研究了水霧化預合金鋼粉生產工藝及合金化方法對鐵基粉末冶金材料性能影響，詳細研究了冶煉、霧化、還原工藝參數對預合金鋼粉化學成份和物理性能影響，並得出如下結論： （ 1 ）採用高壓水霧化技術可用於生產高密度、高強度、尺寸穩定性的低氫損含量的水霧化預合金鋼粉。 （ 2 ）冶煉溫度越高，高壓水壓力越大，所得生粉顆粒粒度越細。 （ 3 ）水錐角調整在一個適當角度范圍內可獲得粒度組成較好的生粉。 -
Application of mine low density gas drainage system in yangquan mining area
礦井低濃度瓦斯排放系統在陽泉礦區的應用 -
We discuss the phase instability of the system with the grand potential functional and find only gas - liquid phase transition happens and the demixing phase transition does not happen. after numerical calculation we want to draw the phase transition line, but failed in low density because of the divergence in calculation
利用用巨勢泛函展開的方法我們對系統進行了相不穩定分析，發現在我們所討論的離子液體系統中只會有氣?液凝結相變發生，而不會有分層相f碩士學住論文物malaster 』 stm 「變發生。 -
A new low temperature and deepwater slurry system prepared with chemical foaming gas and solid packings, which can reduce the density of the slurry, is introduced
摘要介紹了一種新型的化學發泡氣體充填與固體充填減輕制備的低密度低溫深水水泥漿體系，並對其在海洋深水環境下的性能進行了系統的室內評價研究。 -
These pressure forces may also incorporate buoyancy forces, to allow objects filled with a low density gas to float in denser media
當然，壓力也可包含浮力，以使填充了低密度氣體的物體能懸浮在高密度的介質中。 -
Above 450, the formation of low density u ( al, si ) 3 phase, together with the release of the impurity gas and fragmentation of u3si2 particles, will cause fuel meat to swell, al matrix to crack and u3si2 particles to invade to clad. as a result, the thickness of the meat increased, the thickness of clad decreased and the deformation of fuel plates increased, and the leakage probability of the radioactive mass increased reasonably
同時，由於芯體膨脹及鈾硅顆粒碎裂的綜合作用，使u _ 3si _ 2顆粒向包殼侵入，最終使燃料板芯體厚度增加較大，芯體及燃料的體積也顯著增加，包殼厚度減薄；高溫將加速芯體u _ 3si _ 2顆粒碎裂、芯體開裂、包殼以及燃料板變形，從而使燃料芯體與包殼脫開，最終可能導致放射性物質泄漏。
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