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
And miles to go before I sleep.
在我就寝前还得赶许多哩路。
The buyer has the option of cancelling the contract.
买主有权撤消合同。
I can wait, but my toothache can't!
我倒是可以等。可是我的牙痛等不了啊！