某碳氢化合物已知可能是烯烃或是烷烃.A hydrocarbon was known to be either an alkene or alkane.在较高的烯烃情况下, 高能的中间物稳定作用更易出现.With the higher olefins, stabilization of the energetic intermediates occurs more easily.有时它们就难于和芳香族或烯烃的吸收峰相互区别.They ar...
This paper describes the principle of microprocessor ultrasonic range finder.主要介绍微电脑超声测距仪的工作原理.A Control System of VVVF Elevator with Single Chip Microprocessor and PLC.PWM逆变器 型交流电梯紧急自动疏散系统.I’ve got a typerwriter with a ...
An added complication is the growing concern for the environment.还有个问题就是对环境的日益关注。The age difference was a complication to the rela-tionship.年龄差异使得双方交往更加困难。One complication which can arise is a prolapse.可能出现的一种并发症是脱垂。...
我是个孤儿，差不多是靠自己长大的。I'm an orphan and pretty much grew up on my own.他是个孤儿，和他叔叔一起生活。He was an orphan and lived with his uncle.当他的父母在事故中丧生之后, 他便成了孤儿.When his parents were killed in an accident, he became an orphan....