The many stage helical gear train system optimal design which takes the dynamic properties as an objective function is presented.

提出了提高多级斜齿圆柱齿轮传动系统动态性能优化设计方法。

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Menstruation (a period) is a major stage of puberty in girls; it's one of the many physical signs that a girl is turning into a woman.

月经（例假）的来到是女孩青春期中经历的一个重要阶段；它是女孩变为女人的众多生理变化之一。

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A three-stage life has few transitions, while a multi-stage life has many.

三阶段式的人生少有转折，而多阶段式的人生则有许多转折。

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His many stage plays include The Real Thing, Arcadia and the Hamlet-inspired Rosencrantz and Guildenstern are Dead.

BBC: Sir Tom Stoppard

The 65 slides include many stage shots, including George Harrison with his red Rickenbacker guitar, which appeared in the film A Hard Day's Night.

BBC: Rare colour photos of Beatles 1964 US tour for sale

Aside from Eyre's performance, there is an abundance of archive footage of memorable productions, and interviews with many stage legends, including one of the last ever interviews given by Sir John Gielgud.

BBC: You are in: Entertainment