Biharmonic operator
[计] 双调和算子, 重调和算子
🧩 词语组成解析
[计] 重调和的
🗣️ 情景例句
When do you need the volunteers,
你们什么时候需要义工
Buyers always pay great attention to packing.
买方通常很注意包装。
I have 4 books and 2 magazines to check out.
我有4本书和2本杂志要借。