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- periscopic convex lens 周视凸透镜
- A convex surface, body, part, or line. 凸面、凸面体、凸面部分或凸线
- 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 can be collected with the convex. 凸透镜具有聚集光线的作用。
- The convex surfaces faces toward the left. 凸面朝左方。
- A convex lens is used to concentrate rays of light. 凸透镜用于聚集光线。
- A stone tool with a convex side. 龟甲形石斧一边凸起的石制工具
- A deep - red garnet, unfaceted and convex. 红榴石一种深红色的石榴石，无刻面呈凸圆状
- Concave on one side and convex on the other. 一面凹进一面凸起的
- Convex on one side and concave on the other. 凸凹的一面凸一面凹的
- Convex on both sides;biconvex.Used of a lens. 凸凸的两面部凸的；双凸面的。用来指透镜
- To the excellent concave and convex carving skill. 碑上的阴阳刻。
- A convex lens is used to concentraterays of light. 凸透镜用于聚集光线。
- A deep - red garnet,unfaceted and convex. 红榴石一种深红色的石榴石，无刻面呈凸圆状
- A deep-red garnet, unfaceted and convex. 红榴石一种深红色的石榴石，无刻面呈凸圆状
- Convex on both sides; biconvex. Used of a lens. 凸凸的两面部凸的；双凸面的。用来指透镜
- Fault: Convex or concave muzzles. 缺陷：突起或凹入的口部。
- The Orbit of the Moon around the Sun is Convex! 月亮绕太阳的轨道是凸状的。
- Convex glass is used to magnify an image. 凸透镜是用来放大图像。
- Something having concave and convex edges terminating in points. 新月形物凹边和凹边汇合成点的物体
