It is made from a generally foot-shaped bottom layer having a length extending from a heel area to a toe area, a top surface and a bottom surface.

该鞋垫由通常为足形的底层制成，该底层具有从踵部区域延伸至脚趾区域的长度、顶表面以及底表面。

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Cup: The cup should be "u" shaped and resemble a bowl or rounding bottom. A "v" shaped bottom would be considered too sharp of a reversal to qualify.

要点二：u型是重要的形态标志，看起来像个碗，一般认为V型则反转太剧烈了，。

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In calculating the strength of V-shaped bottom structure of a planing craft, there occurs a problem of how to calculate the virtual moment of inertia of V-shaped plating.

在对带斜升的艇底板架板架进行强度验算时，会遇到斜升底板虚惯性矩的计算问题。

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If shares are to later rally, when a stock falls they make a W shaped bottom.

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The key point is that investors fear a 1930s-like L-shaped bottom with stocks going nowhere for years.

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The SPY had reversed to the upside on November 16, which turned out to be a quite uncommon v-shaped bottom.

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