火药是希腊火的直接衍生物.Gunpowder was the lineal successor of the Greek fire.这类合成物是亚硝基羟胺衍生物.These compounds are nitrosohydroxylamine derivatives.很多环戊烷的衍生物在这个范围也出现吸收.Many cyclopentane derivatives also absorb in this region....
From the structure of the circuit is divided into cross - straight - to pay and pay - cycloconverter .从其电路的结构上分为交 — 直 — 交和交 — 交变频器.Circuit - oriented model of cycloconverter is developed by adding tube - changing mode an...
他把教孩子们热爱读书当做自己的使命。He made it his crusade to teach children to love books.应征入伍者被当做炮灰。The conscripts were treated as cannon fodder.敌人亵渎这所教堂,把它当做马厩.The enemy desecrate the church by using it as a stable....