They will be helped by the very latest in navigation aids.他们将会受益于最新的导航系统。Pack ice around Iceland was becoming a threat to navigation.冰岛周围的浮冰群曾一度对船只航行构成威胁。a laser navigation device激光导航装置...
He sang much more sweetly than he has before.他的演唱比以前要动听许多。He heard the car engine running sweetly beyond the open door.他听到敞开的门口外的汽车引擎运转正常。I just smiled sweetly and said no.我只是甜笑着婉拒了。...
那么是如何知道火星有铪 -187 的 呢 ?And how is it known that Mars had hafnium - 187 ?该催化剂为酰胺 - 醚为基础的铪催化剂.This activator is acyl amine - the hafnium activator that ether is a foundation.提出了连续 反相 色层分离锆、铪新方法.A continuous reveree - phfise...