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
if it's all right with your dad.
假如你爸爸答应的话。
He watches TV every day.
他每天都看电视。
It has sailed across the Atlantic many times.
它已经多次横渡大西洋。