The SR series slides are formed by a fixed rail and an inner mobile rail of the same length.

幻灯片的SR系列由一个固定轨道和内部相同长度的移动导轨。

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There is a box fixed beneath the chalk rail of the blackboard.

黑板下方横木条底下设有一个盒子。

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As a new installation method for big structures, double girder integral lift is mainly composed of fixed girder, moveable girder, work anchor, moveable anchor, jacks and guide rail.

双梁式整体提升法是一种新型的大型结构安装方法，主要由固定梁、活动梁、钢绞线、工作锚、工具锚、导向装置及千斤顶组成，与现在常用的安装方法相比，具有价廉、安全、高效和易推广等特点。

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All sides know that many striking rail workers have had their eyes fixed on what has been called "Black Tuesday", when many of those who have been struggling to get to work over the past week will themselves be going on strike.

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