这是因为氯磺化反应存在位阻效应的缘故.This was due to hindered reaction in the chlorosulfonation.气体有效浓度增加,氯磺化反应速率增加,氯气和二氧化硫的体积配比以1∶1为佳.The rate of chlorosulfonation increased with increasing concentration of the gaseous mixture.而氯磺化聚乙烯产品具有...
Every year, 250,000 people enter the job market.每年有25万人进入就业市场。Put your best foot forward and work on the assumption that there is an acceptable solution to every problem you are likely to face.要尽力而为，要相信你可能遇到的每一个问题都会有一个适当...
He drew out his notebook and began to take notes.他掏出笔记本开始记笔记.Do you usually take notes in class with a pen or pencil?你在课堂上记笔记通常用钢笔还是铅笔?Take notes during the consultation as the final written report is very concise.磋商的时候要...
a trio for piano, oboe and bassoon钢琴、双簧管及大管三重奏He tucked the bassoon under an arm and stamped out.他把巴松管夹在腋下,跺着脚走了出去.The Wedding of the Painted Doll for Bassoon Quartet.彩色洋娃娃的婚礼(为大管四重奏)....
The owl is sacred for many Californian Indian people.对于很多加利福尼亚的印第安人而言，猫头鹰是圣物。We hiked the Grand Canyon, exploring Indian cliff dwellings.我们去大峡谷徒步旅行，探究印第安人的崖居。They battled against other Indian tribes, but rarely fought wi...
目的: 研究SP1在乳腺腺病及乳腺癌组织中的分布.Objective : To study the SP 1 distribution in breast adenosis and carcinoma.癌旁腺病小叶增生期阳性率为33.9%.The positive rate of surrounding mammary adenosis lobular proliferation stage was 33.9 %.管腺病;淋巴管病一种血...