大学英语词汇短语释义解析及例句 convex lens
释义：
convex lens 凸透镜：一种透镜，其两侧表面都是向外凸起的曲面，能使光线汇聚于一点。
例句：
A convex lens is used to concentrate rays of light.
凸透镜用于聚集光线。
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。
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 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。
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 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。
Two kinds of convex lens which make parallel light rays converge to the focal point are given.
本文给出两种能使平行光严格聚焦于一点的凸透镜。
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 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。
Conclusion Wearing lower degree convex lens can reduce incidence rate of myopia in primary school students.
结论配戴低度凸透镜可降低小学生近视的发生率。
Objective To investigate the effect of lower degree convex lens on preventing myopia of primary school students.
目的探讨低度凸透镜预防小学生视近的效果。
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。
Methods Hypermetropia and myopia were induced by playing concave and convex lens in front of eyes of 32 subjects.
方法在正常眼前放置正、负球镜，人工诱导单纯性远视、近视性屈光参差。
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。
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。
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。
By using the convex lens to focus the solar energy, the use amount of the crystal silicon batteries is largely reduced and the energy conversion rate is improved.
由于利用凸透镜对太阳光进行聚焦，因此晶硅电池的用量大大减少，同时光能转化率也有所提高。
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；
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。
