... pencil of quadrics 二次曲面束 pencil of spheres 球束 pendulum-type equation 摆型方程 ...
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他们最简单的实验是在一个实心玻璃球的边缘上发射了一束激光。
In their simplest experiment, they shot laser light at the edge of a solid glass sphere.
目的：填补国人嗅神经、嗅球和嗅束的形态学资料，为鼻腔顶、颅前窝手术提供保护病人嗅觉功能的解剖学依据。
Objective:To Provide morphological data of olfactory nerves, bulb and tract of Chinese to protect olfactory function in the operation of nasal cavity roof and anterior cranial fossae.
螺线管磁场透镜不可避免地具有球差，因此引起束流发射度增加。
Solenoids show inevitability their spherical aberration, which increases beam effective emittance.
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