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
Good-bye.
再见。
If I wanted to rent a van, how much would it cost?
要是我租一辆搬运车，得花多少钱？
Several girls stopped and looked in one of the glass-topped tables.
几个女同学停下来仔细看看陈列在一张带玻璃罩的桌子里的东西。