Concave grating
[化] 凹面光栅
🏥 医学释义
凹光栅
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
grating
[['greitiŋ]]
n. 光栅, 摩擦, 摩擦声\\na. 令人气恼的, 刺耳的
🗣️ 情景例句
She has a high reputation as a writer.
她是个有名气的作家。
I asked him to buy it for me, but he wouldn't.
我请他帮我买，但是他不肯。
Bottoms up!
干杯（见底）！