二芳基氮氧化物自由基比二烷基氮氧化物自由基还要稳定.Diaryl nitroxides are even more stable than the dialkyl nitroxides.这种反应构成了制备芳基环丙基乙炔的有效方法.This sequence constitutes an efficient method for preparing arylcyclopropylacetylenes.例如芳基二硫化物可抑制聚烯烃的氧化.A...
Experiment materials: jar , windpipe, limewater, flume and the experiment record chart for each group.学生用材料: 广口瓶 、 导气管 、 石灰水、火柴、集气瓶、水槽和小组实验记录表.The following details pertain primarily to the critical - depth flume.下面的详细说明...
By the corollary to Theorem 4.3, the origin is asymptotically stable.根据定理4.3的推论, 原点是渐近稳定的.We have the following corollary to this principle.由这个原理我们可以作如下推导.The corollary could only be yet another distortion.于是不免又多了一层歪曲.Th...
Worse, the changes have been backdated to the start of this year.更糟的情况是, 这些(收)化追溯至今年初算起.The contract that was signed on Thursday morning was backdated to March 11...周四早上签订的合同实际生效日期追溯到3月11日。The pay in crease is backdated ...