From the aspects of material mechanics and fluid mechanics, discusses the design reason of elastic toothed belt vapour seal and its theory foundation.

从材料力学及流体力学角度探讨了弹性齿汽封设计的依据及其存在的理论基础。

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Millions of dollars and hours are spent on packaging design and with good reason!

在包装设计上投入无数金钱和时间是有充分的理由的！

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And in fact growing worldwide for that reason." Harry Atwater's description of his new design for solar cells is published in the journal Nature Materials.

VOA: standard.2010.02.19

One reason is that some design limits are insuperable.

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Design has been and always will be reason number one, and we will make sure a Lamborghini will always be recognizable through its significant stylistic features.

FORBES: Connect

The reason is both history and design.

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