Graded insulation
[电] 层级绝缘
🧩 词语组成解析
a. 分等级的；按年级分的
insulation
[ˌinsju'leiʃən]
n. 隔离，孤立;绝缘;绝缘或隔热的材料;隔声;
🗣️ 情景例句
I'd better unpack.
我还是先把行李打开吧。
Every one's faults are not written in their foreheads.
知人知面不知心。
I don't know.
我不知道。