By 1978, in the USA, the use of CFCs in aerosol propellants was banned.美国自1978年起禁止在喷雾剂压缩气体中使用含氯氟烃。This law closely resembles that obtained with conventional propellants.这种规律非常类似于用普通推进剂所得出的规律.The lighter version used liqu...
The lighter version used liquid hydrogen, the heavier used hypergolic propellants.较轻的推进器采用液态氢, 较重的采用自燃推进剂.Pressure - fed engines are particularly susceptible to dissolved gas in the propellants.挤压 式 发动机对推进剂中溶解的气体特别敏感.Thi...
她的表情隐在阴影中，很难读懂。Under the shaded light her expression was difficult to read.艾森豪威尔离开白宫，退隐到他在葛底斯堡的农场。Eisenhower left the White House and retired to his farm in Gettysburg.杰伊点点头，笑容慢慢隐去了。Jay nodded, his smile fading....
适应特殊显示器尺寸的,会使更新出现问题.Serving up separate pages to fit particular screen sizes creates overhead problems with page updates.然而, 手机短信息服务的出现使更新的 、 更简短的情话的发展成为必然.SMS messages , however, have necessitated the development of a n...
Every one for himself and the devil take the hindmost.人人都只考虑自己，谁落后谁倒霉。In this business you have to be tough , and the devil take the hindmost.做这一行必须心狠, 谁顾别人谁吃亏.The devil takes the hindmost.让逃得最慢的人被魔鬼抓去吧〔意为不管别人,只顾自己逃命等〕....
Don't slosh too much water on the floor when you're having a bath.洗澡时别把太多水溅到地板上.Devils don't slosh around much of a Sunday, I don't reckon. "我猜想, 真是星期天鬼是不怎么四处游荡的. ”The main effect is to raise the fund...
Sir Joseph's knighthood was the final feather in his cap after years of dedicated service to the community.约瑟夫爵士的爵士地位是他数年服务于社区的最高荣誉.He received a knighthood in the New Year's Honours list.他是新年受勋者之一，荣获爵士称号。The Q...