Investigated charring erosive characters of internal insulation of solid rocket motor under flight acceleration.研究了固体火箭发动机内绝热层在飞行加速度条件下的炭化烧蚀特性.Understands high efficiency gating and gradient cooling techniques via mold i...
Backdoor deals are unhealthy practice.走后门是一种不正之风.The thief escaped by the backdoor.贼从后门逃走了.Why do I think she got in through the backdoor?为什么我总觉得她是走后门进来的?...
狄喇克的理论还预言有一种质子的姐妹粒子,带负电荷, 叫做反质子.Dirac's theory also predicted a negatively charged sister for the proton, called the antiproton.你将需要100000个Fermilab制造出的反质子才能够点燃一盏灯.You would need 100,000 Fermilabs to power a single l...
我有一副很低的女低音嗓音。I had a very low contralto voice.这次的配乐需要一位女低音歌手。The score calls for a contralto.唱歌的四个声部是女高音 、 女低音 、 男高音和男低音.The four parts in singing are soprano, alto, tenor and bass....