查询词典 concave lens

A Galilean telescope is defined as having one convex lens and one concave lens.

阿伽利略望远镜的定义是一个凸透镜和一个凹透镜。

A concave lens causes rays to diverge as though they are coming from a focal point.

发散透镜使光线分开，就好象从焦点上发出来的那样。

Convex lens and concave lens are two tpyes of familiar lenses.

常见的透镜有凸透镜和凹透镜两种。

An approach is proposed, which emphasizes the importance of concave lens which can scatter the laser and make it an ideal signal source to be captured by the CCD lens. Thus, the measurement would be more precise, taking full advantage of the laser.

本文提出以凹透镜散射法将待测光源转化为镜头可以直接捕捉的理想光源，从而大大提高了点的测量精度，充分利用了激光作为信号源所体现的优势。

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。

Measuring the focal length of concave lens using collimator;2. The relation between the focal length of a concave lens and its reflective image properties is analysed and deduced.

本文分析推导了透镜的凹面反射成像与凹透镜焦距的关系，介绍了利用此关系较方便地测量凹透镜焦距的方法。

Some are flared—that is, thicker at the rim than in the center, like a concave lens.

有些呈喇叭形──即边缘较中心厚，类似凹透镜。

Methods: A -20D concave or -10D concave lens was worn over the right eye in 30 fourweek old pigmented guinea pigs.

选健康4周龄豚鼠45只，随机分成3组，Ⅰ组（右眼配戴-20D）、Ⅱ组（右眼配戴-10D）Ⅲ组。

By using the transfer matrix of the beam propagation,the movement of the low-order nonlinear ghost image s was calculated when high-power Gaussian laser beam passes through the single convexo-convex lens,the single concavo-concave lens and the 4F system and then the movable rules were analyzed.

采用矩阵光学方法，计算了高功率高斯光束通过单个凸透镜、单个凹透镜及 4F系统时低阶非线性鬼像的移动，并分析了其移动规

Lens, plano-convex lens, double-convex lens, plano-concave lens, double-concave lens, plus/minus Meniscus Lens.

球面镜：平凸透镜、双凸透镜、平凹透镜、双凹透镜、正/负弯月透镜、超半球透镜、金属球面镜、积分器及其他球面胶合镜等。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了