A model of a new modularization parallel machine tool, whose main movement is based on parallel structure, is put forward in this paper.

提出了一种新型模块化并联机床的结构模型，采用并联机构实现了机床的主运动。

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The scroll wrap is the main movement part of compressor, only have the tooth, have no abrasion, thus the life is longer, so this is free maintenance compressor.

涡旋压缩机主要运动件涡盘只有啮合没有磨损，因而寿命更长，被誉为免维修压缩机。

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Rotating table for the grinding wheel for the rotating main movement circular week for sports, grinding wheel rack for intermittent movement of vertical cutting.

在这种机床上，砂轮作旋转主运动圆工作台旋转作圆周进给运动，砂轮架作间歇的竖直切入运动。

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And then in the early eighteen twenties, he decided to incorporate this as the main theme of the last movement, the finale of his last symphony.

之后,在十九世纪二十年代早期,他决定将这一段,作为结尾乐章的主旋律,也就是他最后一部交响曲的最终乐章

耶鲁公开课 - 聆听音乐课程节选

On his return home, Qutb openly identified with Egypt's main Islamist movement, the Muslim Brotherhood, although he did not formally join it until 1953.

ECONOMIST: The father of Islamic fundamentalism

The outgoing government of Fidel Ramos had similar hopes of success, and in 1996 signed a peace deal with the Moro National Liberation Front, the main independence movement.

ECONOMIST: Philippines

The military wing of the main Islamist movement in Algeria , which has observed an unofficial ceasefire since 1997, announced formally that it was giving up the armed struggle.

ECONOMIST: Enter NATO