low-energy component 中文意思是什麼
low-energy component
解釋
低能成分-
There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not
首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。 -
Standard test method for application of ionization chambers to assess the low energy gamma component of cobalt - 60 irradiators used in radiation - hardness testing of silicon electronic devices
硅電子器件輻射強度試驗用鈷60輻射源的低能成分評估的電離箱的應用的標準試驗方法 -
The results show that ti2n ( 200 ) tropism interplanar is obtained when the ion beam energy is 875ev and the current is 60ma. the ti2n crystals embed in the films deposited at low temperature, while tin crystals are formed at high temperature. the analyses of component show that the tiny films are rich - nitrogen
結果表明：在能量為875ev 、束流為60ma時獲得取向較好的ti _ 2n （ 200 ）晶面；低溫沉積的薄膜的主晶相為ti _ 2n ，高溫沉積時為tin ；成分分析表明tin _ y薄膜是富氮的。
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