埃及人

The wild zinnia, a nondescript small flower, was first found growing in Mexico in 1519 and introduced to European and American gardens.

野生的百日菊是一种毫无特色的小花，于1519年第一次被人们发现，它生长在墨西哥，而后被引进到了欧洲和美洲的花园里。

It mainly discusses on stability finite element method of out-spane flection.

重点讨论平面外屈曲稳定分析的有限元法。