Agkistrodon halys pallas belonging to viper family is only growing in China.江浙蝮蛇属蝰蛇类,是我国特有的蛇种.These mythological figures are described disparagingly as belonging only to a story.这些神话人物被轻蔑地描述为“仅在传说中出现”的人物.The ore - genesi...
God, what a swine Bertrand is.我的老天, 伯特兰德简直讨厌死了.The transmission of normal circular - arc gear is a typical Bertrand conjugation.考虑到平行轴的法向圆弧齿轮传动已臻成熟,论文重点研究了相交轴与交错轴条件下法向圆弧齿轮传动的基本方案.Mr Zhang Songnian once translated an essa...