The rate constants of radical and electrophilic addition to alkenes are dominated by different factors.烯烃的自由基加成和亲电加成速率受不同的因素控制.These should be four undetermined constants in the displacement function.位移函数中应有四个未定常数.Some w...
还设计了另一种系统,它能够间歇地发送瞬间脉冲.Still another system is designed to send out transient pulses intermittently.狂风间歇地席卷火星上的尘云.Violent winds periodically drive clouds of dust around Mars.在稍高一些的流速时,个别的颗粒沿着河床间歇地滚动和滑动.At some higher vel...