Knopite
铈钙钛矿(钛酸钙矿夹杂氧化铯及氧化铁)
🗣️ 情景例句
He married a classmate from high school.
他与高中时代的同班同学结婚。
She requests your presence at the conference.
她恳求你们参加会议。
They had a good time, but I didn't go.
他们玩得很痛快，但我没有去。