冬季，霜冻可能会伤害冷却器，所以哪怕是最短暂的停用也要排干冷却器的水。
In winter, frost maybe hurt the cooler so the water must be let out even in a shortest time.
针对不同类型的空气-空气热回收器，介绍了严寒地区冬季热回收器预防霜冻的几种措施及其融霜方法。
The article introduced several measures to prevent frost and melt it for in cold winter for different types of air-air heat reclaiming device.
其中一个系列是制作于1913年的“冬季彩蛋”，它由无色水晶雕刻而成，用白金和钻石点缀以呈现类似霜冻的景象。
Among the Imperial Egg Collection was the 1913 Winter Egg, carved from rock crystal and ornamented with platinum and diamonds to resemble frost.
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