关键词：市政道路;冬季维护;冷补沥青混合料 [gap=272]Keywords: municipal road; Winter maintenance; Cold filling asphalt mixture ...
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由于冬季铁路维护方面的问题，即使是现在柏林市郊往返列车的时速都无法超过60千米/小时（40英里/小时）。
Even now Berlin’s commuter trains cannot exceed 60kph (40mph) because of winter maintenance problems.
寒冷地区冷却塔冬季运行时结冰现象严重，给安全生产和操作维护都带来许多困难。
The operators of cooling towers always suffer freezing problems during winter in the cold climate area, much troubles are brought on endangering the safety service and normal maintenance.
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