Think of theme parks and you think of roller coasters.
一提到主题乐园，你马上想到的云霄飞车。
The structure of roller screw is introduced in this article.
介绍了滚柱丝杠的结构。
A type of roller structure straightener can resolve the problem well.
一种结构简单的辊式矫直器能很好地解决这个问题。
The application of roller press for domestic cement industry is in beginning stage.
机在我国水泥工业上的运用尚处于起步阶段。
The application of roller press for domestic cement industry is in beginning stage.
机在我国水泥工业上的运用尚处于起步阶段。
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