The hot air permitted higher speeds before the critical Mach number was exceeded.热空气可使之在超过临界马赫数之前达到更快的速度。The aim is to fly at about Mach 2, twice the speed of sound.目标是以大约2马赫的速度飞行，也就是音速的两倍。Empirical results are needed in...
The hot air permitted higher speeds before the critical Mach number was exceeded.热空气可使之在超过临界马赫数之前达到更快的速度。The hot air permitted higher speeds before the critical Mach number was exceeded...热空气可使之在超过临界马赫数之前达到更快的速度。The aim ...
'Is he still just as fat?' — 'I wouldn't know,' continued her mother, ignoring the interruption, 'and be that as it may, he has made a fortune.'“他还是那么胖吗？”——“我不知道，”她妈妈接着说，没有理睬这一打岔，“就算那样，...
She stayed with them, linking arms with the two girls, joking with the boys.她跟他们呆在一起，与两个女孩手挽手，和男孩子们开着玩笑。Andersen stayed single all his life.安徙生终身未娶.In the act of going he stayed to straighten the bedspread.他边往外走,边停下脚来抻了抻...
With the column ov - 17 ( 2 % ) on Chromosorb W AW - DMCS ( 60 - 80 mesh ) , 1.5 m glass column with 3.2 mm i. d.色谱柱为玻璃柱Φ3.2mm×1.5m ( OV-17涂渍量2% )."Have you said all this to the police?" — "Aw, come on!"“你是不是把这些都告诉警方了？”“...
We must supersede old machines by new ones.我们必须以新机器取代旧机器。The use of robots will someday supersede manual labor.机器人的使用有一天会取代人力.We must supersede old machines by [ with ] new ones.我们必须以新机器取代旧机器....