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
I'm glad you like it, Susan.
我很高兴你喜欢它， Susan。
I think it's going to be a nice day.
我想今天会是一个好天。
Is she at school today?
她今天上学来了吗？