The border of the African plate slices across northern Algeria, and thus when the plate rolls and drops, the Mediterranean floor there will suddenly find itself unsupported.
非洲板块的边界切割过阿尔及利亚北部，因此当板块滚动并下沉时，那里的地中海海床会突然发现自己失去了支撑。
Three types of adjustable turning rolls: manual lead screw adjusting, manual bolt shifting and electric sliding plate shifting.
三种可调式滚轮架：手动丝杆可调式、手动螺栓移位式和电动滑板移位式。
The gap crown between two work rolls of plate mills and the strip shape can be adjusted by axial shifting of the work rolls, both of them have a special contour.
板材轧机上一对带特殊辊型的工作辊轴向相对移动时，可改变辊缝凸度，调节板形。
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