本文系统地介绍了雷达极化基础理论。
The basic theory of radar polarization is presented systematically in this paper.
本文系统地介绍了逆向建模和有限元网格划分方法。
A converse modeling and Finite Element grid division method is systematically introduced in this paper.
本文系统地介绍了凝汽器真空系统氦质谱检漏原理和方法。
This essay introduces the theory and method of helium mass-spectrum leak detection for vacuum system of condenser.
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