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
Brilliant idea!
这个主意真棒！
What do you want to be when you grow on?
当你长大以后，你想做什么？
Yes, it is. Why don't you take off your sweater?
是啊，你何不脱了羊毛衫呢？