碳遷移 的英文怎麼說
中文拼音 [tànqiānyí]
碳遷移
英文
carbon migration-
This phenomenon was closely related to the transportation and extraction rate of carbon atoms in the surface of catalysts at different temperatures
這種現象與不同溫度下碳原子在催化劑表面的遷移和析出速率密切相關，也即與不同溫度下催化劑的活性有關。Previously it was thought that this spread took place between 43, 000 and 36, 000 years ago, but the re - evaluated data suggests that it actually happened between 46, 000 and 41, 000 years ago - starting earlier and moving faster
但是用放射性碳測定年代的一項最新數據表明，遷移過程應該在4 . 6萬年至4 . 1萬年前就已經發生了，即現代人祖先更早且更快地進入了歐洲。As the only one among nearly 200 polytypes of different crystalline sic, which has a cubic crystalline structure, p - sic is an excellent candidate for fabrication of high power devices because of its high values of saturated electron drift velocity and electron mobility in comparison with the other sic polytypes
碳化硅是碳化硅近200種不同結晶形態中唯一的純立方結構晶體，載流子遷移率高，電子飽和漂移速度大，更適合於製造電子器件特別是電力電子器件之用。The soils and sediments organic matter ( som ) are highly heterogeneous and comprise various complex organic macromolecules such as humus, kerogen, black carbon ( bc ), etc. the relative abundance, characteristics and structure of these som play a important role on the global carbon cycles, global change, transformation and fate of the organic and inorganic pollutants, the soil fertility
土壤和沉積物有機質是高度非均質的，包括許多復雜的有機高分子聚合物如腐殖質、乾酪根、碳黑等。這些有機質的相對含量，性質和結構對全球碳循環，全球氣候變化，有機和無機污染物在自然界的遷移、轉化和歸宿，土壤的肥力等有非常重要的影響。Humic acid usually formed from phytoplanktons, zooplanktons, and epicontinental vascular plants through biodegraded and condensated reaction. krogen derived either from humic acid or from the reworking materials. differing from humic acid and kerogen, bc was produced from the incomplete combustion of fossil fuels and biomass
並且不同的有機質有不同的來源，腐殖酸通常是浮游生物和陸生的高等植物經過生物降解、聚合等過程形成的；乾酪根是腐殖酸進一步演化而成，既有原生的也有異地遷移而來的；碳黑則不同於腐殖酸和乾酪根，它是生物質和煤、油等化石燃料經過燃燒產生的。But the comprehensive properties were improved remarkably. with the addition of carbon nanotubes, the polarization of charging process decreased, the plateau of discharge became flatter and the migration of potential of peaks value of cyclic voltemmograms reduced. for the other hand, the exchange current increased, ohm resistance and electrochemical reaction resistance of the electrodes decreased, the diffusion resistance of hydrogen and the resistance of adsorption decreased, too
摻入碳納米管對儲氫合金電極的容量影響較小，但其電化學性能卻有較大的改善，主要體現在：充電的極化減小，放電平臺更加平穩、循環伏安曲線的峰值電位隨掃描速度增大的遷移量減小，交換電流密度增大，電極的歐姆電阻、電化學反應、擴散電阻和吸附電阻均減小。Influence of some parameters are analyzed, such as : d ( diffusion rates ), v ( coefficient of convection ). double or three compartments model of soc is used. it is found that the diffusion process for different compartments of organic carbon in soil is very differently. this model could also calculated the accumulation of soc in soil per year, which is helpful to understand the dynamic process of organic carbon storage in soil
最後一章本論文對新老有機碳在土壤當中的遷移積累進行了數值模擬，分析了不同參數對有機碳擴散的影響，得到了不同年齡的有機碳在土壤中的分佈規律，這為進一步預估中國土壤中的有機碳動態變化打下了基礎。The analytic results of the effects on the micromorphological structure of the film by the electrochemical condition ' s showed that the carbon is apt to improve the boundary combination between the scfs and the surface of the cathode and the seperation of the films, and that the micromorphological structure of the mpgcfs is greatly affected by the dring and the power voltage, which remarkably affluence ion move in swelling cathode film, and that higher temperature and concentration of cu2 + in the medium solution are also advanagable to the deposition of cu in scfs. the plot of deformation behavior of mpgcfs showed that the maximum strench ratio decreases and the brittleness increases due to the existence of the metal phase, and that the strengh trend of the composite films is fistly up and down followed with the content of metal phase because of the change of the role of the metal phase from acting as the physical cross - linking to weakening the films due to destroying the whole structure of the polymer
另外它作為基體的另一個突出的優點是制備的溶脹復合膜（ scf ）中的溶劑與電解液中的溶劑相同都是水，克服了以前膜內外不同溶劑之間擴散的問題，結果使得電流最終趨於一種穩態，因此可以更好實現用電化學條件來控制mpgcf的形態結構；硬質石墨材料的多孔的結構和石墨本身的結構性能特點使得碳作為陰極材料時有利於溶漲復合膜（ scf ）與電極表面的結合以及膜的剝離，因此是作為陰極的理想材料；電化學條件中的乾燥程度和電壓能夠明顯的影響離子在膜內的遷移，從而對mpgcf的形態結構造成較大的影響；而提高反應溫度和增大電解液中銅離子的濃度也有利於銅在膜中的沉積生長。When the growth getting higher, the migration rate of carbon atoms was increased, more carbon atoms would pass through catalyst particles to contribute the growth of carbon nanotubes, which increased the growth rate and also resulted in less defects in carbon nanotubes
在較高溫度時，隨著催化劑活性的提高以及碳原子在催化劑顆粒表面的遷移速率的增加，可提供更多的碳原子用於納米碳管的有序生長，減少了缺陷的引入。At lower growth temperature, the lower extracting rate of carbon atoms from catalyst particles due to the lower activity of the catalysts resulted in more defects formed in carbon nanotubes. moreover, the lower transportation rate of carbon atoms in catalyst particles also made lots of carbon atoms deposited on the surfaces of grown carbon nanotubes, or on carbon wrapped catalyst particles, even to form amorphous carbon layers
在較低溫度時，由於催化劑的活性較低，導致石墨面在生長過程中引入的缺陷較多；另一方面，碳原子在催化劑顆粒內遷移速率較低，使得多餘的游離態碳原子（或原子團）可能在納米碳管表面以非晶形式沉積，或者包覆催化劑使其「中毒」失去催化活性，或者直接形成非晶的碳納米顆粒。On the contrary, the valley soils had the minimum change for the profile sic content and the maximum change for the profile soc content the diversity of the soil profile carbon content change were related to their sources, movements and inversions in the soils
在不同地貌部位的不同層次之間，無機碳含量在地勢高的梁峁地的土壤剖面上變化幅度大，有機碳含量在地勢低的溝川地的土壤剖面上變化幅度大，二者的差異主要由各自的來源、在土壤中的遷移、轉化等的不同所引起。It is pointed that inversion - layer mobility is different from field - effect mobility for sic mosfet. and a relationship has been established between the ratio of the experimentally - determined field - effect mobility to the actual inversion - layer carrier mobility and interface states
明確指出碳化硅器件的反型層遷移率和實驗測定的場效應遷移率不能等同，並給出了以上二者的比值與界面態密度的定量關系。分享友人