So, N_2O_5/organic solvent and N_2O_5/HNO_3 are two complemental nitrating systems.

因此免费xx视频，N_2O_5／有機溶劑和N_2O_5／HNO_3是兩種互補的硝化體系无码四区精品。

The effect of the molar ratio of guaiacol/methyl- nitrate ,the reaction temperature, the reaction time, the choices of nitrating agent and solvent in the synthesis of 5 -nitro-guaiacol has been studied.

本文研究了愈創(chuàng)木酚／硝酸甲酯的摩爾比福利黄色一区、反應溫度插抽视频、反應時間，硝化劑和溶劑的選擇對5——硝基愈創(chuàng)木酚合成的影響人人上人人搞人人插。

Results showed that the former afforded an yield over 80% and the regioselectivity up to 5.4, both were higher than that using nitrous acid as nitrating agent.

結(jié)果表明：以硝酸銅作硝化劑時的硝化收率可達80%欧美日韩com，P/O比值最高為5.4，均比用相同濃度的硝酸作硝化劑時要高色色日本射射射。

The nitration of toluene was carried out in the presence of acetic anhydride with CCl4 as solvent, 95% nitric acid as nitrating reagent, and niobic acid calcinated at 300℃ for 3 h as catalyst for 60 min at 40℃.

實驗結(jié)果表明综合色久一本毛片，當反應溫度為40℃，反應時間為60min時国产精品18久久久久久不卡，以CCl4為溶劑，以質(zhì)量分數(shù)為95%的硝酸為硝化劑欧美人人爱，在醋酐存在條件下在线无码不卡网，以經(jīng)300℃焙燒3h后的鈮酸作為催化劑，甲苯硝化產(chǎn)物中異構(gòu)體的鄰對比達1.26ccc欧美在线视频观看，較硝硫混酸的1.67顯著降低www.huangse.con，產(chǎn)物得率達99.3%。

Here we describe a gene in the plant pathogen Streptomyces turgidiscabies that encodes a NOS homologue, and we reveal its role in nitrating a dipeptide phytotoxin required for plant pathogenicity.

作者描述了植物致病菌Streptomyces turgidiscabies中一種編碼NOS同源物的基因并揭示了其在植物致病性中所需的對植物毒素二肽的硝化作用日日射日日干。

nitrating：摻氮

熔融硝酸鈉處理 nitralizing | 摻氮 nitrating | 硝酸浸出 nitric acid leaching

nitrating：硝化

nitratine 鈉硝石 | nitrating 硝化 | nitratingacid 硝化酸

nitrating centrifuge：硝化離心機

finalize 把(計劃,稿件等)最后定下來, 定案 | nitrating centrifuge 硝化離心機 | slotted core 開槽鐵心

nitrating apparatus：硝化器

nitrate respiration 硝酸呼吸 | nitrating apparatus 硝化器 | nitration 硝化

nitrating paper：硝化原紙

nitrated paper 硝化紙 | nitrating paper 硝化原紙 | nitrating tissue 硝化原紙