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

In parliamentary elections in November, the main opposition movement the Muslim Brotherhood made striking gains, winning almost 20% of the seats.

BBC: Last year, the talk in Egypt was of political reform.

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

Newspaper advertisements accused NCA members of taking money from Mr Mugabe's western critics and the main opposition Movement for Democratic Change (MDC) to undermine his government.

BBC: Zimbabwe civic groups defy Mugabe