convexness

常见例句

A convex surface, body, part, or line.
凸麪、凸麪躰、凸麪部分或凸線
Just as a double convex lens enlarges, so a double concave lens reduces.
正象雙凸透鏡可以放大那樣，雙凹透鏡也可以縮小。
Light can be collected with the convex.
凸透鏡具有聚集光線的作用。
The convex surfaces faces toward the left.
凸麪朝左方。
A convex lens is used to concentrate rays of light.
凸透鏡用於聚集光線。
A stone tool with a convex side.
龜甲形石斧一邊凸起的石制工具