concavo convex

常见例句

Push the handle gently until the concavo convex parts of both clutches occlude automatically.
用手轻推手柄待两个离合体的凸凹处重合后便会自行咬合.
5.Push the handle gently until the concavo convex parts of both clutches occlude automatically.
用手轻推手柄待两个离合体的凸凹处重合后便会自行咬合.
concavo convex lens
凹凸透镜
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。