尽管大西洋两岸呈现了相似的一面，可是他们还有很大的不同。
Despite the appearance of similarity on both sides of the Atlantic, however, there are big differences.
活塞环槽岸是活塞环槽之间的部分。其为活塞环边提供支持面。
The piston lands are parts of piston between the ring grooves. The lands provide a seating surface for the sides of piston rings.
第四层软弱夹层以外的岸坡岩体变形较协调，这一软弱夹层是岸坡潜在的最危险的破坏面；
Deformation will be concerted of the fourth weak interbed exceptant bank slope rock mass and weak interbed will be potential, the most dangerous failure plane.
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