concavo-concave
基本解释
- adj.两凹的；两面凹洼的
英汉例句
- concavo concave
n. 双凹形 - His figure looks very funny in the concave mirror.
他的样子在凹镜里显得非常可笑。 - An indented or concave surface or area.
凹陷，洼地凹的表面或地区 - 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。 - A concave molding with a cross section that approximates a quarter circle.
飞檐的凹圆线脚截面近于九十度弧的凹线脚