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Appropriate carbon - diffusion and holding temperature during precooling are effective improvement measures.

恰当的渗碳扩散与预冷保温是提高疲劳寿命的有效措施.

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Finally the two points needing attention when putting air precooling system into operation are given.

最后,指出空冷系统使用中需注意的两个方面.

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Comparisons were made between precooling of strawberries in a humidicooling system and a conventional mechanical store.

通过草莓在湿冷系统和普通机械冷库中的预冷试验,测定了草莓在这两种预冷装置中的冷却速率.

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