This article gives some discussion on the prevention and maintenance of the straight rails with alternative uneven side wearing in the heavy-load and fast-speed section.
文中对重载快速区段直线钢轨交替不均匀侧磨的预防与整治作一些探讨。
A man carrying a heavy load was coming towards them. Napoleon pulled the empress to one side and allowed the man to pass first.
迎面来了个背着重物的人，拿破仑忙把皇后拉过一旁，让那人先过去。
A man carrying a heavy load was coming towards them. Napoleon pulled the empress to one side and allowed the man to pass first.
迎面来了个背着重物的人，拿破仑忙把皇后拉过一旁，让那人先过去。
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