• 星系作为透镜观察其它星系,这种全新精确手段确认宇宙大小年龄及其膨胀速度

    The size and age of the universe, as well as how fast it is expanding, has been confirmed with a new, precise method that USES galaxies as lenses to look at other galaxies.

    youdao

  • 空间电荷透镜聚焦特性决定电子云大小形状密度分布

    The focusing properties of a space-charge lens depend on the size, shape and density distribution of its electron cloud.

    youdao

  • 分析表明,大小菲涅尔透镜-分离程度以及入射波波面曲率半径因素有关得出了消除焦移的条件。

    The analysis that the size of the focal shift is related to the factors such as Fresnel number, separating degree of lens-diaphragm and curvature radius of incident wave wavefront, etc.

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  • 模拟结果显示耦合效率大小光纤位置芯片透镜尺寸激光光源光斑形状共同决定

    The simulation results show that the optical coupling efficiency is determined by fiber position, the lens design of the photodiode chips, and the shape of the light source.

    youdao

  • 扭曲度大小反映透镜质量重要参数

    Torsion resistance is another important parameter that reflects the quality of X-ray lens.

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  • 实验表明透镜口径足够成像系统分辨率DMD面元大小决定

    Meanwhile, according to the experimental results, the resolution of the imaging system is decided by the size of unit on the DMD when the aperture of lens is big enough.

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  • 辅助透镜测微目镜进行平行光束会聚,测出直管玻罗板线辅助凸透镜焦平面上所成像大小

    Then using another convex lens and a micrometer eyepiece the altered parallel rays is focused, and the imaging size of line pair of collimator imaged on the another convex lens is measured.

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  • 辅助透镜测微目镜进行平行光束会聚,测出直管玻罗板线辅助凸透镜焦平面上所成像大小

    Then using another convex lens and a micrometer eyepiece the altered parallel rays is focused, and the imaging size of line pair of collimator imaged on the another convex lens is measured.

    youdao

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