Chadless perforation
[电] 无屑凿孔
🧩 词语组成解析
[计] 半穿孔
perforation
[[ˌpə:fə'reiʃən]]
n. 穿孔, 孔眼, 贯穿, 贯通\\n[化] 穿透
🗣️ 情景例句
I'm a photographer.
我是摄影师。
Foam plastics are applied to protect the goods against press.
泡沫塑料用来防止挤压。
How do you do ? Are you having a nice time in Beijing?
你好！你在北京玩得愉快吗？