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
Give me a discount.
给我打个折吧。
I would like to repair her washing machine.
我要去修理她的洗衣机。
(The farmer arrives at the woman's house again.)
（农民再次来到妇女的家。）