reaction selective的意思|示意

A process for preparing 1-methoxy-2-propanol by selective ring cleavage-addition reaction of propylene oxide with MeOH in the presence of HM-9512 catalyst is described.

阐述了利用环氧丙烷和甲醇在催化剂HM-9512存在下，通过选择性开环加成制备1-甲氧基-2-丙醇的工艺过程。

Sugar was as the start material by the reaction of the selective protections at 6-hydroxy, chlorination, deacetyl in three steps obtained the target compound(trichlorosucrose);

以蔗糖为起始原料，经羟基选择性保护、氯化、脱乙酰基等3步化学反应合成三氯蔗糖；

The agreement between the experimental data and theoretical calculation suggest that the selective resonant tunneling model is a good method for the reaction with evident resonant peak.

理论计算和实验在一定程度上符合得很好，这说明了选择共振隧穿模型是计算有明显共振峰的核反应截面的有利工具。

Selective separation and its reaction mechanism of titanium component in modified slag were researched by using selective enriching modified slag as raw feed.

选用经选择性富集的改性渣为原料，研究了改性渣中钛组分的选择性分离及其反应机理。

Inhibition of Return (IOR) is the hysteresis phenomenon shown by the reaction of the previous note on the location and it is a significant phenomenon to selective attention.

返回抑制是指对先前注意的位置上进行反应所表现出的滞后现象，是选择性注意的一个重要现象。

In this reaction, selective formation of 2, 6-dmn other than 2, 7-dmn and the contradiction between 2, 6-dmn selectivity and 2-mn conversion are the two main difficulties.

在2 -甲基萘选择甲基化反应中，2,6 -二甲基萘相对于2,7 -二甲基萘的选择生成以及2,6 -二甲基萘选择性与2 -甲基萘转化率之间的矛盾是需要克服的两个主要困难。