... closed differential form 闭微分式 closed-form expression 解析解 Closed-form formula 解析解 ...
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The closed-form expression for the mean squared beam width of annular beams propagating through atmospheric turbulence is derived by using the integral transform technique.
采用积分变换技巧，推导出了环状光束通过湍流大气传输二阶矩束宽的解析表达式，并研究了湍流对环状光束扩展的影响。
By the traditional means, people tried to search for a closed form of the analytical expression of the "range doppler" cell's area.
传统的方法是寻找“等距-等多普勒”单元面积的闭合形式的解析表达式。
Then , an implicit expression for electron density and a closed form of threshold voltage are presented fully comprising quantum mechanical ( qm ) effects.
给出了电子密度的隐式表达式和阈电压的显式表达式，它们都充分考虑了量子力学效应。
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