本文研究了一种新型行星传动 —— 滚锥齿超环面行星蜗杆传动.The paper researches a new type mechanical transmission mechanism - the Rolling cone - type toroidal drive.'环'.''面,环形圆纹曲面圆圈形成的超''.'环'.''面; 具...
He tried to calm them, but was greeted with shouts of derision.他试图让他们平静下来，但却招致他们大声的嘲笑。He gave a snort of derision.他哼了一下鼻子表示嘲笑.Children dread the derision of their playmates.孩子们害怕受到同伴的嘲笑....
Today he is formally announcing his candidacy for President.今天他将正式宣布参加总统竞选。They even had clips of Nixon announcing his candidacy.新闻中还配有尼克松宣布竞选的录音剪辑.George Bush trounced Mr McCain in South Carolina, ending his candidacy.结...