1) trivalent titanium
三价钛
1.
Bleaching technology by trivalent titanium is proved to be superior to that by aluminium powder in aspects of principle, result and economic cost, through contrast analysing of the two kinds of bleaching technologes.
通过对偏钛酸铝粉漂白工艺和三价钛漂白工艺在原理、漂白后效果及经济成本方面的对比分析 ,阐明了三价钛漂白工艺优于铝粉漂白工艺。
2) travalent titanium
三价钛(冶)
3) Low-valent titanium
低价钛
1.
The reactions of carbonyls with a low-valent titanium reagent prepared by TiCl4with Mg in THF were carried out under ultrasonic action at room temperature for 10 min to1 h and corresponding olefins were obtained in good yields.
本文试图接Luche的解释,选择低价钛作用下谈基化合物的还原偶联反应,以观察超声辐射是否有预期效果。
4) low valent titanium
低价钛
1.
Pinacol coupling reaction induced by low valent titanium has higher chemoselectivity and stereoselectivity,and has increasing attracted organic chemists in recent years.
由低价钛络合物诱发的片呐醇偶联反应,具有良好的化学选择性和立体选择性,近几年来又引起有机化学家们的极大兴趣与重视。
2.
Recent developments on application of low valent titanium to organic synthesis including those of (non)natural products and their analogs, novel substrates as well as the extended/improved McMurry reac- tion are reviewed.
主要综述了近年来低价钛诱导的McMurry反应在有机合成中的应用新进展。
5) price of titanium dioxide
钛白价格
补充资料:丰枯电价(见季节电价)
丰枯电价(见季节电价)
seasonal power price
丰枯电价(seasonal power priee)在水电为主的电力系统中,对于专门利用丰水季电能的用户或在丰水季增加用电量的用户实行的优惠电价(见季节电价)‘(张工)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条