当所给风向图是欧拉图时，由这一近似算法求得的投递员路线是最优的投递员路线。

It is also shown that the postman route obtained by this approximation algorithm is optimal if the given windy graph is Eulerian.

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为了在预期站点建立更准确的风速和风向图，一些公司转向激光或者声纳系统基础的测量仪器完成MCP。

To establish a more accurate picture of wind speed and direction at prospective sites, some companies are turning to laser and sonar-based measurement instruments to complement MCP.

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