convexness

常见例句

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