Nowadays, a great rail-mounted combine chews away at a 10-foot-thick layer of salt in the old seabed, before it is towed 11 miles back to the plant, and washed and ground.

现今，一条配有长长铁轨的联合开采机不断啃噬着旧海床10英尺厚的盐层，直到它被推行11英里回到盐厂进行清洗和沉淀。

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The elevator USES is the rectangular section rail, can make the engineering staff directly to the working layer, simplifies the project additional complex system and mechanical system.

此种升降机采用的是矩形截面导轨，能够把工程人员直接送到工作层，简化了工程额外的复杂系和机械统。

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While this contaminant layer is responsible for varying friction values, it plays a beneficial role by separating the wheel and rail surfaces, usually decreasing wear.

轮轨表面的污染层也会影响粘着系数的变化，它避免了轮轨表面直接接触，有利于减少磨损。

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