Concave function
[计] 凹函数
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
🗣️ 情景例句
He made a pretty fortune by selling all his land.
他卖了所有的土地发了大财。
Two of a trade seldom agree.
同行是冤家。
Mother doesn't make up.
妈妈不化妆。