nitrogen atmosphere 中文意思是什麼

nitrogen atmosphere 解釋
氮保護氣氛
  • nitrogen : n 【化學】氮，氮氣。 nitrogen chloride 三氯化氮。 nitrogen cycle 氮循環。 nitrogen dioxide 二氧化...
  • atmosphere : n. 1. 大氣；大氣層，氣圈；空氣。2. 四圍情況，環境，氣氛。3. （藝術品的）基調，風格。4. 氣壓。5. 【化學】霧。
  1. Management of n in agricultural ecosystem is one of the most essential factors for agricultural sustainability. injudicious use of nitrogen fertilizer has induced a crucial environmental problem, which includes volatilization of nox to the atmosphere, acid rain, induced leaching of soil nutrients, changes in the global n cycle, and nitrate pollution of groundwater

    農田生態系統中長期單一、過量偏施化學肥料特別是化學氮肥，造成農產品品質下降，肥料利用率低，不僅增加了農業生產成本，還嚴重污染環境，已成為農業可持續發展的一個重要制約因子。
  2. The main reservoir of nitrogen is the atmosphere.

    氮的主要蓄存庫是大氣層。
  3. In air atmosphere, cu2o in molten cu corrodes si3n4 / sic quickly. in nitrogen atmosphere or some slipcover existing, cu corrosion resistance of si3n4 / sic is very excellent

    在空氣介質中， si _ 3n _ 4 sic抗侵蝕性能較差；在氮氣介質中或有覆蓋劑保護時，陶瓷材料具有優良的抗侵蝕性能。
  4. The theoretic cycle capacity of limno2 is 286 mah g - 1, which has attracted a great deal of people to research. aim at the impurity of limno2 which was synthesized by the predecessor and the phase change during the electrochemical process, we try several methods, including wet moist chemical method, liquid state method, solide state method and liquid dipping method. at the same time, we study the synthesis of limnc > 2 in defferent atmosphere, for example air, argon and nitrogen

    Limno _ 2具有286mah ? g ~ （ - 1 ）的理論容量，這種高容量材料深受廣大研究者的關注，針對前人合成出的還有少量雜相和在電化學循環過程中出現相變四川人學碩l :學位論文的問題，我們嘗試了幾種合成方法:濕化學法、液相法、固相法和溶液浸漬法，並在不同氣氛:空氣、氮氣和氫氣中進行limnoz的合成研究。
  5. The hydrogen source used is high purity of 99. 9999 %. for comparison, the annealing treatments were processed under ambient pressure in air and nitrogen atmosphere respectively

    在kno3溶液中進行液相攙雜的納米碳管，其儲氫能力明顯提高，並且隨摻雜濃度增加而提高。
  6. Equipment lianfeng magnet industry co., ltd. nowpossesses advanced instruments which includes : nitrogen atmosphere push kilns and the elevator kilns, auto - pressing machines, mirror lap machines and other advanced testing instruments

    公司擁有國內先進的全自動氮氣保護推板窯和鐘罩爐生產線以及自動壓機鏡面磨床等完善的輔助設備以及國外引進的各類測試儀器試驗設備。
  7. Earth ' s atmosphere is primarily nitrogen and oxygen

    地球的大氣主要有氮氣和氧氣。
  8. One obvious remedy is to reduce emissions of sulfur and nitrogen oxides to the atmosphere.

    減少硫氧化物和氮氧化物向大氣的排放量是一個有效的治理措施。
  9. Bell - style hydrogen furnace : the bell - style hydrogen furnace can be operated at temperature as high as 2050oc under reducing or inert atmosphere such as hydrogen, nitrogen and argon

    從美國進口的高溫真空氣氛燒結爐，最高燒結溫度2050 ，能在氫氣、氮氣以及氬氣等氣氛下完成工藝操作。
  10. It is the result of sunlight reacting with hydrocarbons and nitrogen oxides in the atmosphere.

    它是陽光與大氣中的碳化氫和氧化氮作用的結果。
  11. We found that the cz silicon wafers preannealed by rtp in nitrogen atmosphere are significantly characteristic of ncz silicon wafer, that is, the n - o complexes related stds are also generated in the cz wafer subjected to rtf in na and subsequent proper heat treatments

    研究發現，氮氣氛下高溫rtp處理的cz硅樣品在後續熱處理中表現出了摻氮硅的退火特性，進而證明了在氮氣氛下rtp處理中氮發生了內擴散。
  12. Irradiation defects decompounded and recombined with oxygen impurity and large quantity of nucleation centers were introduced in czsi bulk during annealing at 1100. in nitrogen atmosphere, more defects were induced in fast neutron irradiated czsi than in argon atmosphere

    不同氣氛下快中子輻照直拉硅中缺陷形成的差異很大， 1100的高溫退火中，與氬氣氛相比，氮氣氛退火樣品中出現了更多缺陷。
  13. Soil nitrogen pool is the main body of terrestrial carbon pools, so it ' s change will possibly result in relatively great change of atmosphere n2o concentration, and, it ' s change will also affect global climate change. meanwhile, the nitrogen in the soil can also cause the water pollution through soil water infiltration and surface runoff

    作為陸地氮庫的主體，土壤氮庫的微小變化，可能導致大氣n _ 2o濃度發生較大的變化，以至影響全球氣候變化；同時土壤中的氮素也可以通過下滲和地表徑流等方式流入水體，導致水體污染。
  14. The influence of nano - al2o3 on the sintering and the properties of the si3n4 ceramics was researched in this paper. the samples with different amount of nano - al2o3 were obtained by using pressureless sintering at 1600, 1650, 1700 in the nitrogen atmosphere. the microstructure and the composition of the ceramics were determined by the means of x - ray, sem, micro - hardness meter etc. it is show that the sisty ceramics can be densified at 1650c to % percent of the theory density through the addition of nano - al2o3 ( the value could be 90 percent by other technique ). the crystalline growth of the cylindrical - si3n4 and the ratio of its longitude to its diameter are increased with the addition of nano - al2o3. a uniform microstructure and an fined crystal as well as more sialon phases can be obtained in the si3n4 ceramics through the addition of that

    實驗結果表明：在碳管爐中、氮氣保護下進行燒結，添加劑為納米al _ 2o _ 3粉末時，由於納米粉末的高活性、高燒結驅動力，在1650就可使si _ 3n _ 4完全地燒結，並使其緻密度可達理論密度的96以上（比其它工藝高6左右） ；同時，納米al _ 2o _ 3地加入大大促進了長柱狀? si _ 3n _ 4的生長和發育及柱狀晶長徑比的提高，使微觀結構均勻、細化，形成了更多力學性能優異的固體? sialon相，減少了不利於陶瓷材料性能的晶間玻璃相，凈化了晶界。
  15. The tlow distance and gelating time of the nanocomposites were shorter than that of the pure pf, which meet the standard of the pf used in frictional materials. compared to the pure pf, the silica7pf nanocomposites exhibited excellent heat stability only in nitrogen atmosphere, however, so do vermiculite / pf nanocomposites in both nitrogen and air atmospheres. compared to the brake pad based pf resin, the wear rate of the present one based with silica / pf nanocomposite decreased obviously, especially in high temperature

    用烷基銨ctab和kh - 560對蛭石進行有機化處理，通過原位聚合法制備了酚醛樹脂接枝改性sio _ 2納米復合材料、酚醛樹脂kh - 560改性sio _ 2納米復合材料、酚醛樹脂ctab改性蛭石納米復合材料、酚醛樹脂/ kh . 560改性蛭石納米復合材料，採用ftir 、 xrd 、 afm和tg分析與流動距離、凝膠化時間的測試，研究了所制備的酚醛樹酯納米復合材料的結構、固化行為和熱穩定性能，並研究了以酚醛樹酯納米復合材料為基體的剎車片摩擦磨損性能。
  16. Additional annealing experiments in nitrogen atmosphere revealed that the heavily damaged region with hydrogen - induced defects appears to be the adsorption center for the outside oxygen to diffuse into the silicon during the high - temperature annealing process, and consequently, broaden the thickness of the box layer. this important finding may provide a possible solution to reduce the cost of the conventional simox - soi wafers while maintaining a desirable box thickness

    獨特設計的氮氣氛退火及分步退火實驗證明了原注入樣品的缺陷層中氫及氫致缺陷的存在使得在退火過程中加速外界氣氛中的氧擴散進來，並成為強捕獲中心使擴散進來的氧滯留于缺陷層從而促使氧缺陷層中的氧沉澱生長，加速了高溫退火中的內部熱氧化過程，從而形成了比傳統相同劑量simoxsoi厚得多的氧化埋層。
  17. The sample composition was analyzed by means of tg and x - ray diffraction. the following conclusions can be drawn from the experiments : given conditions, the sample powder that has the same xrd data as the standard fetioa can be gotten when use any method mentioned above ; the key in synthesis is to avoid the oxidation of fe2 +, so the whole process should performed under vacuum or neutral atmosphere, samples used by this study were prepared under nitrogen atmosphere ; the heat - treated time and temperature have some influence on the sample powder, results show that the proper time and temperature is 120 minutes and 1100 respectively

    研究結果表明：在合適的反應條件下，用上述三種合成方法都能得到xrd數據與標準fetio _ 3物相基本吻合的粉體；合成反應需要克服的主要問題是防止體系中fe ~ （ 2 + ）的氧化，因此，整個反應必須在真空或者非氧化性氣體保護下進行，本研究需要的樣品是在高純從保護下合成的；煅燒的時間和溫度對最終的產物也有一定的影響，研究發現：合理的煅燒時間和溫度分別為120分鐘和1100 。
  18. The law on component change of carbocoal from different temperature pyrolysis of yanzhou bituminous coal in ordinary pressure fluidized bed in nitrogen atmosphere is analyzed, especial change law of sulfur, and activation energy of pyrolysis carbocoal in different temperature is analyzed in thermogravimetric analyzer, it is found that activation decreases with pyrolysis temperature increasing

    摘要利用兗州煙煤在不同溫度下常壓流化床氮氣氣氛的熱解半焦作為樣品，分析了半焦成分變化的規律，特別是硫的變化規律，並利用熱重分析儀分析了不同溫度下熱解半焦的活化能，研究表明隨著熱解溫度的升高，活化能逐漸降低。
  19. Two new in - situ nitrogenation techniques were used for the rapidly solidified fesiz - based thermoelectric materials for the first time in the present work, i. e., the nitrogenation of the powders before vacuum hot - press, and the nitrogenation during the hot - press in a pure nitrogen atmosphere

    本項研究中，首次採用兩種獨創的快速凝固fesi _ 2基粉末原位氮化技術： 「粉末氮化/真空熱壓」技術和「氮氣保護熱壓」技術。
  20. The main results are as follows : 1. ynthesize the carbon / nickel oxide compound aerogel by sol - gel. it becomes aerogel electrode through heating, aging, followed by supercritical drying from carbon dioxide and subsequent pyrolysis in an inert nitrogen atmosphere

    本文的主要研究內容歸納如下： 1 .採用sol - gel法合成碳/氧化鎳復合氣凝，經過丙酮置換、二氧化碳超臨界乾燥、炭化等過程製成復合碳氣凝膠電極。
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