• Water surges from the cells on the inside of the leaf to those on the outside, causing the leaf to rapidly flip in shape from convex to concave, like a soft contact lens.

    叶子内部细胞外面的细胞,导致叶子迅速地翻转就像片柔软隐形眼镜

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  • Just as a double convex lens enlarges so a double concave lens reduces.

    正象凸透镜可以放大那样,双凹透镜也可以缩小。

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  • Objective: to observe the effect of concave and convex on growing and the refractive developing of guinea pig eyes and to establish lens-induced animal model of myopia or hyperopia.

    目的观察凹透镜凸透镜豚鼠眼球生长屈光变化影响建立透镜诱导型屈光不正动物模型

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  • We fabricated a large computer-generated holography on a concave lens surface to test the convex secondary mirrors surface.

    凹透镜表面制作出了用于非球面检测的曲面全息图。

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  • Just AS a double convex lens enlarges, so a double concave lens reduces.

    正象凸透镜可以放大那样,双凹透镜可以缩小

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  • Firstly, a telescope system is made up with a concave lens and a long-focus convex lens, by which the angle of the parallel beam from the collimator can be change.

    该方法借助一个焦距较长的凸透镜凹透镜组成无焦系统可以使直管出射光束张角发生改变

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  • Among the reshaping systems converting a Gaussian beam to a flattop beam, the system composed of a plane-concave and a plane-convex lens, is a relatively simple structure.

    高斯光束整形平顶光束的整形系统中,两个非球面镜组成的系统比较简单结构形式,该系统由平凹镜和平凸组成。

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  • Methods Hypermetropia and myopia were induced by playing concave and convex lens in front of eyes of 32 subjects.

    方法正常眼前放置正、负球,人工诱导单纯性远视近视性屈光参差。

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  • Methods Hypermetropia and myopia were induced by playing concave and convex lens in front of eyes of 32 subjects.

    方法正常眼前放置正、负球,人工诱导单纯性远视近视性屈光参差。

    youdao

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