人们用一些国际通用的标志来提示搬运装卸作业人员，比如，某些托盘装载的货物不可以受防热或者受冻，或者不可以使用钩钓等等。

A number of international markings are available to advise handlers that a certain crate must, for instance, be protected from heat or freezing or not handled with hooks.

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并在计算结果基础上，对两种方案结构进行了分析比较，指出了瓦楞结构的防热效果更佳。

Based on comparative analysis, it shows that the corrugated sheet structure has better thermal protection effect.

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