英语语法分析

envelopment

n. 包；包封，封套；封皮

例句

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。