有关皇室的书卖得正火。Books on the Royal Family are selling like hot cakes.通过对几种细化晶粒方法的比较,提出采用二次正火可细化晶粒并消除魏氏组织.The results show that secondary normalizing can remove the wustite structure and make grain refining.亚温正火的组织主要是铁素体与贝氏体晶团...
Other proportional feedback signals are generated from rate gyros.其他的比例反馈讯号是由速率陀螺产生的.Rate gyros , like position gyros, can be blast started or electrically driven.和定陀螺一样, 速度陀螺也可以采用瞬发式启动或电驱动.For this reason, most floated ...
Modern genetic mechanisms, including informational macromolecules have not always existed in their present form.目前的信息大分子为中心的遗传机制, 从历史的观点看不大可能一开始便以现存的形式见诸于世.The need for informational flexibility can lead to adhocracy.对信息...