vacancy mechanism 中文意思是什麼
vacancy mechanism
解釋
空位機理-
The diffusion mechanism wherein net atomic migration is from lattice site to an adjacent vacancy
一種擴散機制，這時候原子的凈遷移過程是從晶格結點位置移動到鄰近的空位中。 -
The magnitude of the conductivity maximum increases and shifts to lower temperature with increasing sr content. in this paper, the electrical conductivity reaches maximum value at x = 0. 4. below the temperature corresponding to the maximum value, the electrical conductivity is found to follow the relationship for the small polaron hopping mechanism, charge compensation of oxygen vacancy dominates electrical conduction at high temperature, and oxygen vacancy acts as traps to catch carriers, resulting in the decrease of carriers concentration and mobility
通過電學和熱學性能測試結果表明，電導率隨著sr含量的增加以及溫度的變化都出現了極大值，在本論文中，在sr含量為0 . 4時電導率值最大，電導率最大值對應的溫度隨著sr含量的增加而降低，這是由於在低溫下以小極化子導電機理為主，在高溫階段則是氧空位的電荷補償占據主導作用，氧空位使得載流子的濃度和可動性減弱，從而導致電導率降低。 -
The underlying reasons include : the government ' s role in establishing a hospitable environment for the managers remains to be improved ; the supervision on both capital market and managers " market is far from satisfied ; the official standard of managers " selection ; lack of the manager - specific incentive and restraint mechanism ; the vacancy of the restraint system by corporation owners and the ill - founded corporate governance structure, and so on
究其原因有：國家關于企業經營者管理的大環境還有待于改善、資本市場和經理人市場的監督約束機制不完善、企業社會政策目標和效率目標的雙重存在、企業經營者選拔任用標準「行政化」 、企業經營者離崗后缺乏社會保障和制度化報酬、缺少針對企業經營者的有別于黨政幹部的激勵與約束機制、所有者約束機制缺位，沒有形成規范的公司治理結構。
分享友人