扫描电镜显示，试样表面的腐蚀产物膜呈网格状，裂纹呈树枝型，腐蚀产物膜上的沉积物呈花朵状；

SEM showed that sample surface of passive film was grid, and crack was branch-type, and sediment on passive film was bloom shape.

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运用图论中的哈密尔顿图，可以将树枝型专用线取送车问题，转化为求哈密尔顿图中权值最小的哈密尔顿回路问题。

By using Hamilton graph, the problem of wagons placing-in and taking-out on branch-shaped sidings can be turned into searching Hamilton loop of minimum power.

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独特的车轮分型树形悬挂是为了达到轻便，灵活而又坚韧，如果树枝的进化一样。

The unique Fractal Tree Suspension of the wheels was designed to be a light, flexible and strong, evolved as structure of a branch.

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