m cr 中文意思是什麼

m cr 解釋
crotonate]巴豆酸甲酯
  • m : (pl. M's, m's)1. 英語字母表第十三字母。2. M 形狀的東西;【印刷】= em. 3. M (羅馬數字) 1000. MCML = 1950.
  • cr : Cr = Chromium.
  1. Whenyvinnie entered j the room, mary cr m - med up

    文尼已進入房間,瑪麗就閉嘴了。
  2. S, me gustan mucho, los quiero de este color, pero un poco m s grandes, la talla cuarenta y dos. ? aceptan tarjetas de cr dito

    是的,我很喜歡,我要這種顏色的,但是稍微大有第毫秒年, 42號的。這里接受信用卡嗎?
  3. M ssbauer spectroscopy analysis of fe - cr - c alloy powders

    碳合金粉末的穆斯堡爾譜分析
  4. In the second chapter, we attain this goal by another route. collecting all short exact sequence and the morphisms among them, we get a new category, call the short exact sequences category crm. we define a global dimension attached to the original ring r from the view of the short exact sequences category cr. m, named the exact projective dimension

    在第二章中我們將通過另一種方法,也就是考察所有的短正合列以及短正合列之間的態射,我們得到一個新的范疇,通過對這個范疇(我們稱之為短正合列范疇c _ rm )的一些基本性質的考察,我們定義出與環r相關的同調維數,我們稱它為正合投射維數。
  5. In this thesis, we used the q - switched nd : yag laser pulse focused by lens to pump the cr ~ ( 4 + ) : mg _ 2sio _ 4 crystal, with the pump laser pulse duration and energy of 30ns and 50 mj separately, and got the laser pulse with center wavelength, pulse duration and energy of 1. 22 m, 8. 2 ns and 10 mj on the best work condition. on the base of zhangguowei s approximation about gain - switching and the parameter of cr ~ ( 4 + ) : mg _ 2sio _ 4 crystal, we calculated the time characteristics of cr ~ ( 4 + ) : mg _ 2sio _ 4 laser pulse with rate equation by numerical method, obtained the conclusion that the laser pulse duration is only related to the pump energy and cavity length : the larger the pump energy is, the narrower the pulse duration is ; the longer the cavity is, the wider the

    本論文採用調qnd : yag脈沖激光通過透鏡聚焦后縱向抽運cr ~ ( 4 + ) : mg _ 2sio _ 4晶體,抽運光脈沖寬度為30ns 、能量為50mj ,在較佳工作條件下得到了中心波長為1 . 22 m 、脈寬為8 . 2ns 、能量為10mj的激光脈沖;並在張國威分析增益開關時間特性的近似法基礎上,結合實際的cr ~ ( 4 + ) : mg _ 2sio _ 4激光器的相關參數,從速率方程出發,用數值計算的方法更為精確的模擬了cr ~ ( 4 + ) : mg _ 2sio _ 4激光器輸出激光脈沖的時間特性,得出了激光脈寬只與抽運能量、腔長有關的結論,即抽運能量愈大,脈寬越窄;腔長越長,脈寬則愈寬。
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