l ch 中文意思是什麼
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The effects of different current density on the alloying element content were discussed. based on the results, the optimal process condition was confirmed : pb ~ ( 2 + ) 80 - 90 g / l sn ~ ( 2 + ) 7 - 15 g / l ch _ 4so _ 3 ( dissociative ) 130 - 150 g / l composite additive 12 ml / l current density 2 - 6 a / dm ~ 2
採用hull槽實驗方法確定了甲磺酸體系電沉積pb - sn合金鍍層的電流密度范圍，並探討了不同沉積電流密度下pb 、 sn合金含量的變化規律。 -
L ch : logical channel
邏輯通道 -
Economic deve1oprnent l s a comfjl icated systematic project, in hi ch the i ndustria1 framo ork i s the component part of the economi c deve1opment process
經濟發展是一個復雜的系統工程，在整個經濟系統中，產業結構是整個經濟發展動態過程的有機組成部分。 -
Th is paper introduced the fuzzy cont1fol into the variabl e st ruct ure control, hi ch combined the two control methods " nleri ts, real ize ( l the rapi d response, robustness of the systen1, and el iminated the chattering, thus provided a new method for the app1 icat ion of the variable structure contro1 and the fuzzy contro1
本文採用在變結構控制器中引入模糊控制器，結合兩種控制器的優點，即保證了系統響應的快速性，魯棒性，又有效地消除了顫振，從而為變結構控制器和模糊控制器的應用提供了一種新的思路。 -
( ) nce the third pz1rty wh : ch 17 ldys a ro1e of w ; itch - - d ( ) g is introduced another pr ( ) b lem of m ( ) r ; l ] hazard tlf ( ) m the moni t ( ) r incurs. there are two kinds of moni t ( ) r : the t : custee i1nd the b ( ) ard contr ( ) l lcd l > y externa1 diroctors
如何降低監督人的道德風險，就取決於三個方面的因素，一是監督人市場充分的競爭，二是外部監管，三是基金持有人大會或基金股東代表大會的有效性。 -
Several key techniques corresponding to m a in six steps in region - based im a g e retr ieva l are introduced in detail. also com b ing with active resear ch in this area, a n approach of building region and im age se m a ntic networks and applying relevance feedback for im proving on retrieval ef ficiency of based on the low - level features is presented
本論文針對基於區域語義和低層特徵圖像檢索的6個步驟，詳細介紹了該領域的關鍵技術，並結合目前國內/外在這一領域的研究熱點，提出了建立區域語義網路和應用相關反饋技術改進基於低層特徵檢索效果的方法。
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