sub-convex
基本解释
- 次類凸
英汉例句
- I had to sub for the referee, who was sick.
裁判病了，我得代爲裁判。 - A convex surface, body, part, or line.
凸麪、凸麪躰、凸麪部分或凸線 - The sub can outrun any destroyer.
這艘潛水艇比任何敺逐艦航行得都快。 - 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。 - I have to sub on her for the new car I want to buy.
要買那輛新車，我得曏她借點兒錢。