Methods Data Envelopment Analysis (DEA) was applied.
方法数据包络分析应用。
Input Congestion; Data Envelopment Analysis; Returns to Scale; Congestion improvement.
输入拥塞；数据包络分析；规模收益；拥塞管理。
Then it introduces the envelopment-box technology and space subdivision technology of accelerate rays.
同时介绍了加速光线求交的包围盒技术和空间剖分技术。
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