单词convex lens
na.: 凸透镜
网络: 凸镜头；凸球镜片；凸面镜
凸镜
凸透镜
A convex lens can be used to concentrate the sun"s ray and thus burn a hole in a piece of paper.
凸透镜可以用来聚集太阳光，将一张纸片烧穿一个洞。
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。
Light, The Speed of Light, Normal Line, Reflection, Refraction, Plane Mirror, Concave-Convex Mirror, Concave-Convex Lens.
光线，光速，法线，反射，折射，平面镜，凹凸面镜，凹凸透镜。
In yet another embodiment the sheath includes at its distal end a convex lens for use by a camera in obtaining images of said body cavity.
而在另一个实施例中，鞘套在其远端包括凸透镜用于由摄像头使用以获得所述体腔的图像。
She polished the convex lens of her telescope.
她擦拭着望远镜的凸透镜
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。
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。
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。
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。
Style apically 5-fissured. Capsule (immature) obconical, 4-5 mm, glabrous, apex slightly projected and resembling a convex lens.
蒴果（未发育完全）倒锥状，4-5毫米，无毛，先端稍凸出和象的一只凸透镜。