“斯莱特林的记号。”他轻声说，光中闪耀着一个华丽的、蛇形的S。
"Slytherin's mark," he said quietly, as the light played upon an ornate, serpentine s.
为了解决非均匀介质中的光传输问题，利用光学相位共轭波的时间反演特性，实现了对克斯林衍射积分公式的改进。
In order to study laser propagation in inhomogeneous medium, Collins formula was improved by using time inversion characteristic of optic phase conjugation wave.
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