查询词典 bromides

Reaction of pyrazine ( 1a ), pyrimidine ( 1b ), and pyridazine ( 1c ) N -oxides with a variety of aryl bromides, chlorides, and iodides occur in good yields.

反应吡嗪(1A )款嘧啶(2)、氮哒-氧化物与各种芳溴化物、氯化物、碘化物发生良好收益。

A chemical or chemicals viewed from the perspective of their structural characteristics. Included here are concepts which can mean either a salt, an ion, or a compound (e.g.,"Bromates" and "Bromides").

根据其结构特性划分的一种或一类化学物质，包括某种盐，某种离子或某种化合物，如溴酸盐及溴化物。

In chapter four, a real continuous-flow process for synthesis of alkyl bromides or cyanides was demonstrated by nucleophilic substitution reactions of tosylates with bromide and/or cyanide conducted in ionic liquid.

第四章：以离子液体中对甲苯磺酸酯的亲核取代反应为例，探讨了一种新型的&反应原料不断加入而反应产物可以得到即时分离&的连续化反应流程。

This PhD thesis mainly summarizes the original results on studies of aromatic amide-derived phosphines,including the precatalyst system consisting of Aphos and Pd_2 and the applications for promoting room temperature Suzuki cross-coupling of aryl chlorides and aryl/vinyl bromides,respectively,with aryl/vinyl boronic acids,and alkyl boranes.

本博士学位论文主要总结了对芳基酰胺衍生的膦配体的研究，以及该类型配体与Pd_2组成的催化剂在室温下催化氯代芳烃、溴代芳烃、溴代烯烃分别同芳基硼酸、烯基硼酸及烷基硼试剂进行的Suzuki偶联反应中的表现。

The name comes from the fact that sodium and potassium bromides were used as early sedatives.

这个名字来自钠和钾的溴化物被用作早期镇静剂的事实。

His conclusions are not the usual bromides about thinking globally, and acting locally.

他的结论是不是一般溴化物关于思想全球市场，并代理在当地。

It's one of the most well-known medical bromides around: starve a cold, feed a fever.

这是医学界最有名的一个陈词滥调：饥饿治感冒，饱食医发烧。

Opper bromides have been used as catalysis in organic synthesis, batteries, gas sensors and lasers.

uBr已经用于有机合成的催化剂，电池，气体传感器和激光器。

Hydrogen gas, with a byproduct of bromides and chlorides, is produced.

氢气，副产品溴化物和氯化物，是产生。

Sea salt is grayish, as it contains traces of minerals such as calcium, magnesium, Potassium, bromides, and other elements.

海盐是呈灰色的，因为它包含矿物，例如钙、镁、钾、溴化物和其它元素。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。