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.
水从叶子内部的细胞涌向外面的细胞，导致叶子迅速地从凸向凹翻转，就像一片柔软的隐形眼镜。
They're lenses because they're convex vessels, and when they're full of water, they act as a lens and you see the horizon in them, upside down and backwards.
它们是透镜，因为它们是凸面容器，当它们盛满水后，它们可作为透镜使用，你可以看到它们里面上下颠倒的地平线。
They're lenses because they're convex vessels, and when they're full of water they act as a lens and you see the horizon in them, upside down and backwards.
说它们是镜头，因为它们是凸面的容器。盛满水后，它们可作为镜头使用，你可以通过它们看到颠倒过来的地平线。
Putting water into the lens' chamber turns the normally flat lens a convex hemisphere.
将水注入镜头的腔中时，会把平时平面的镜片变成凸出的半球。
(Injecting water back returns the detector to a flat surface.) Injecting water into the chamber of the lens makes the thin membrane become a convex hemisphere.
(给舱室注射水使检测器表面回复平坦)注射水进入透镜舱室使得薄膜变成凹半球。
Just as a double convex lens enlarges so a double concave lens reduces.
正象双凸透镜可以放大那样，双凹透镜也可以缩小。
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：观察凹透镜和凸透镜对豚鼠眼球生长和屈光变化的影响，建立透镜诱导型屈光不正动物模型。
In this paper, a measuring method of convex lens foci in collimator is given.
介绍一种测量平行光管内凸透镜焦距的测量方法。
A single convex lens is used to produce an enlarged image.
能够产生放大图像的单个凸透镜。
A convex lens causes rays to converge on a single point, the focal point.
会聚透镜使光线会聚于一点，即焦点。
And give out the unified optical path, Newton's ring radius and convex lens curvature radius measurement formula of non - contact type, simple cutting type and tangent type Newton's Rring.
并给出了非接触式、浅近切割式及相切式牛顿环的统一的光程差，牛顿环半径及凸透镜曲率半径测量公式。
We fabricated a large computer-generated holography on a concave lens surface to test the convex secondary mirrors surface.
在凹透镜表面上制作出了用于凸非球面检测的曲面全息图。
The parallel light rays of the prnicipal axis that approach a convex lens can converge to the focal point.
只有在近轴光线条件下，平行光通过凸透镜才可近似聚焦于一点。
Wearing lower degree convex lens can reduce incidence rate of myopia in primary school students.
配戴低度凸透镜可降低小学生近视的发生率。
The optical aberration difference between the biconvex Fresenl lens and the plane-convex Fresenl lens was investigated by designing a large aperture Fresenl lens.
通过一个大尺寸菲涅尔透镜的设计，比较了曲面菲涅尔透镜和平面菲涅尔透镜在光学像差方面的差异。
In the experiment we used convex-plane unstable resonator, and analysis the convex mirrors and gain medium thermal lens as a telescope system.
实验采用凸平直线非稳腔，将凸面镜和增益介质热透镜效应等效为望远镜系统进行分析。
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.
用一辅助凸透镜与一测微目镜进行平行光束的会聚，测出准直管玻罗板线对在辅助凸透镜焦平面上所成像的大小；
A convex lens is thicker at its center than its periphery. It causes rays to converge.
凸透镜中心部分比周围要厚，它使光线会聚。
In interference experiments with Newton's ring, considered only is the interference of the air film formed between the convex lens and the plain glass.
普通物理实验中，牛顿环干涉实验只考虑在凸透镜与平面玻璃之间形成空气薄膜下的干涉现象。
The characteristics of negative temperature state system were discussed, and compared with the image-forming behavior of thin convex lens.
分析了处于负温度状态系统的特征，并将其与薄凸透镜成像特征作类比，阐明了应用类比法讲授负温度状态的优越性。
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与被测凹透镜组成无焦系统，可以使准直管出射光束的张角发生改变；
Two kind of simple methods, which are termed of extender lens amplification imaging method and convex lens amplification imaging method, are proposed based on amplification principle in this paper.
文中提出了两种利用放大原理测量全息光栅光栅常数的简单方法：扩束镜放大成像法和凸透镜放大成像法。
Just AS a double convex lens enlarges, so a double concave lens reduces.
正象双凸透镜可以放大那样，双凹透镜也可以缩小。
A convex lens is used to concentrate rays of light.
凸透镜用于聚集光线。
The detected pyroelectric infrared signal passes through an optical filter and is focused by the swinging convex lens and the infrared focus is also swinging slightly.
被检测的热释电红外信号经过滤光镜片和摆动的凸透镜聚焦后，其红外光焦点同样也进行微幅摆动。
Under conditions of monochromatic light and a small object, the spherical aberration was the main factor which led to measuring error of focus of thin convex lens.
在单色光、小物条件下，球差是引起薄凸透镜焦距的测量误差的主要因素。
The utility model relates to a solar energy battery structure which comprises a crystal silicon battery, on the top of which a convex lens used to focus the sunlight is arranged.
本实用新型涉及一种太阳能电池结构，包括晶硅电池，在晶硅电池的上方设置有用于 聚焦太阳光的凸透镜。
Conjugate method is an accurate, simple and convenient method to measure the focal distance of thin convex lens.
共轭法是一种较为准确和简便的测量薄透镜焦距的方法。
This sensor featuring plane-convex lens collimator for expanding beam and coupling, and a low frequency for light pulse modulation is introduced.
利用平-凸透镜准直器作扩束耦合光学系统，采用低频斩光器实现光调制。
This sensor featuring plane-convex lens collimator for expanding beam and coupling, and a low frequency for light pulse modulation is introduced.
利用平-凸透镜准直器作扩束耦合光学系统，采用低频斩光器实现光调制。
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