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
He's just fooling around.
他用情不专。
She is a reliable assistant.
她是个可信赖的助手。
My brother is seeking a job.
我弟弟正在找工作。