精品偷拍一区二区三区,亚洲精品永久 码,亚洲综合日韩精品欧美国产,亚洲国产日韩a在线亚洲

  • <center id="usuqs"></center>
  • 
    
  • 英語(yǔ)翻譯

    英語(yǔ)翻譯
    1.All hydrogenations were run with 0.05% metal levels based on substrate and at concentrations of 2*10M.
    2.metallation with lithium diisopropylamide at 5°in place of butyllithium at -70°significantly improved the yields.
    英語(yǔ)人氣:818 ℃時(shí)間:2020-01-29 06:37:16
    優(yōu)質(zhì)解答
    1.All hydrogenations were run with 0.05% metal levels based on substrate and at concentrations of 2*10M.
    所有氫化反應(yīng)應(yīng)加入占底物0.05%的金屬(作為催化劑,Pt,Ni等等),并且在2*10M的濃度下進(jìn)行.(大哥,你這2*10M是20摩爾濃度還是2的10次方?你表達(dá)不清楚不能怪我的翻譯呀!)
    2.metallation with lithium diisopropylamide at 5°in place of butyllithium at -70°significantly improved the yields.
    用二異丙基鋰在5度下(金屬化)反應(yīng)代替丁基鋰在-70度下反應(yīng)顯著提高了產(chǎn)率.
    我來回答
    類似推薦
    請(qǐng)使用1024x768 IE6.0或更高版本瀏覽器瀏覽本站點(diǎn),以保證最佳閱讀效果。本頁(yè)提供作業(yè)小助手,一起搜作業(yè)以及作業(yè)好幫手最新版!
    版權(quán)所有 CopyRight © 2012-2024 作業(yè)小助手 All Rights Reserved. 手機(jī)版