采用新的管式反应器装置代替釜 式 反应器,将生产7-ADCA和7-ACA的副产物六甲基二硅醚有效地转化成了三甲基氯硅烷.Trimethylchlorosilane was prepared from hexamethyldisiloxane, by - product in producing 7 - ADCA and 7 - ACA.以三甲基硅醚和氯化氢气体为原料, 浓硫酸为催化剂合成了三甲基氯硅烷.Chlorotrimethylsi...
的确曾有一架德国轰炸机自动地在德文郡降落.Certainly one German bomber landed voluntarily in Devonshire.同样, 当单击这个人的电子邮件地址时,就可以自动地调用电子邮件程序.Likewise, clicking on the e - mail address in the address book could launch the mail application.但是, 我们不...
这叫做仿射交换.This type is called affine.摘要本文研究了关于投影体的中心仿射不变量比的问题.This paper concerns the ratio of centro - affine invarients for a projection body.用仿射变换的方法图解空间几何问题对,在图解圆与椭圆之间的转换过程中确定长短轴是解题的关键.This paper discribes the method o...