该分子具有大的TPA截面是起源于该分子的刚性平面共轭结构所固有的线性吸收特性和TPA共振增强；
The large TPA cross section may result from the intensive linear absorbance of the molecule due to its conjugate rigid plane structure, and the two-photon resonance excitation condition.
文中证明了，自返平面列阵具有补偿畸变的能力，不是由于产生位相共轭反射波，而是由于自返光线的叠加和自返元件的特性。
It is shown that the compensation for distortion does not result from the production of the phase conjugate reflected waves, but from the interaction of retro-reflective waves.
根据平面啮合原理，由给定的滚刀双圆弧齿形，推导出与其共轭的工件齿形方程。
According to principle of plane engagement, the paper deduces the equation of conjugate tooth outline in workpiece from given double-arc tooth outline of hob.
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