Fleming discovered penicillin by accident in 1928.
弗莱明在1928年偶然发现了青霉素。
Fleming discovered penicillin by accident in 1928.
弗莱明在1928年偶然发现了青霉素。
Fleming discovered penicillin early in the twentieth century.
弗莱明在20世纪初首次发现了青霉素。
Rand Flem-Ath and Graham Hancock all write that an unknown advanced civilization existed on the Antarctica continent and was destroyed by cataclysmic shifting of the crust of the Earth.
Ath和格雷厄姆·汉考克所有记载了在南极洲陆上存在的并改变毁灭了的一个未知先进文明.
In this paper, the two calculation methods including M method and finite linear element method (FLEM) of anti-slide pile are improved based on the researches of the predecessors.
摘要本文在前人研究的基础上对桩前土体需要开挖的抗滑桩提出了一种新的计算方法,即似m法。
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