Concave cutter
[机] 凹面铣刀
🧩 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
Is your wife ill?
是你太太病了吗？
She was not in the slightest surprised.
她一点也不吃惊。
She is a good-looking girl.
她是一个漂亮女孩。