impurity density 中文意思是什麼
impurity density
解釋
雜質濃度-
This shift became distinct after annealing at 1100, which showed a decrease of the density and was considered that the interstitial impurity had diffused from sio2
根據現有數據認為退火過后氧化層的密度變小，可能是氧化層內部間隙式雜質擴散出來的結果。 -
Secondly, density of states for metallic carbon nanotubes with a magnetic impurity is studied based on a single orbital anderson model
其次，引入anderson模型和快速收斂的微擾展開方法研究了單個磁性雜質對碳納米管態密度的影響。 -
By means of chemical etching, microscope observation, eelectron probe x - ray micro - analyzer ( epma ), the micro - distribution of c acceptor defect in lec si - gaas wafer is investigated, the results show that there is serious influence of the density and distribution of dislocations on the distribution of c impurity in wafer
本文通過ab腐蝕、 koh腐蝕，金相顯微鏡觀察，透射電鏡能譜分析，電子探針x射線微區分析，研究了液封直拉法生長的非摻半絕緣砷化鎵（ lec ， si - gaas ）單晶中碳的微區分佈。 -
The defect and interface in sapphire and gan were observed by afm. we found that when the dislocation density in sapphire was lower thanl05 / cm2, the dislocation density in gan was 108 ~ 109 / cm2and not linear with the dislocation in sapphire. the impurity of mo in sapphire and gan was measured by sem xps epma and uvf we found the mo content in sapphire was 10 - 4, and the mo content in gan was lower than ppm. so it was concluded that low - cost mo crucible is viable
用掃描電鏡（ sem ） 、 xps 、電子探針和紫外熒光光譜儀測量了藍寶石襯底和gan外延層中的mo雜質的含量，發現藍寶石襯底中含有mo雜質，含量約為10 ~ （ - 4 ） （質量含量） ；而在外延層gan中沒有檢測到mo雜質，即mo雜質含量小於ppm級。 -
Weber et al have calculated the density of impurity and energy spectra of hydrogenic impurities in rectangular cross section qwws without considering the effects of external fields
Weber等人在不考慮外場的情況下討論了矩形量子阱線中類氫雜質的dois和能譜。 -
Damage annealing and impurity density distribution of as n2 co - implantation si
的損傷退火及雜質濃度分佈 -
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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