The heptane compound has a primary purpose as a plasticizer for doublebase propellant systems.化合物庚烷的主要用途是作为双基推进剂的增塑剂.The factory produces propellant for ballistic missiles.这个工厂为弹道导弹生产推进剂。A variety of mechanical surfaces ...
The factory produces propellant for ballistic missiles.这个工厂为弹道导弹生产推进剂。Some stratification exists in the spray produced by any liquid propellant injector.由任何液体推进剂喷注器所产生的喷雾都存在某些成层现象.The nitroguanidine is added to the prope...
Television has irreversibly changed our perception of the Royal Family.电视不可逆转地改变了我们对皇室的印象。Human perception is highly imperfect and by definition subjective.人的感知具有高度缺陷，而且天性主观。our perception of reality我们对现实的认识...
The Ball was attended by the cream of Hollywood society.好莱坞的大牌影星们出席了那个舞会。They attended college together at the University of Pennsylvania.他们一起就读于宾夕法尼亚大学。Jack had attended these meetings as a matter of routine for years.数...
The extraction mechanism of palladium in chloride system by di ( 1 - methyl heptyl ) acetamide ( N _ ( 503 )) has been studied.本文研究了N, N二 甲庚基乙酰胺 ( N_ ( s03 ) )从氯化物体系中萃取钯的机理....
Into her nineties, her thinking remained acute and her character forceful.虽已年届九旬，她依然头脑敏锐，个性很强。These trends only got worse as we moved into the nineties.我们步入20世纪90年代时，这些潮流变得更糟了。By this time she was in her nineties and nee...
冬天又来了, 把寒风 、 严霜 、 驯顺的知更雀和闪烁的星光,也都带来了.Winter again came round, with its winds, frosts, tame robins, and sparkling star light.老虎驯顺的在笼子里睡觉呢,一点都不吓人.The tiger doesn't look frightening at all when it is sleeping tamely in...
She became alternately angry and calm.她时而愤怒时而平静。As a companion star orbits its primary , it alternately approaches and recedes from the Earth.当伴星围绕着主星运转时, 它交替地朝着地球或背离地球运转.They were deglycerolized by alternately centrifug...