three-point leveling system 三点调平装置
point leveling system
点调平系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The optical structure of focus and level system was introduced, and a mathematical model for single-point measurements of height and focusing and leveling was set up.
介绍了调焦调平系统的光学结构，并建立起了理想的单点高度测量与整场调焦调平的算法模型。
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