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
Good night, Harry,
再见，Harry。
An old dog cannot alter its way of barking.
老狗难改吠声。
But a closer study of the evidence, supported by a deeper sense of the period,
但是，进一步仔细研究，对那个时代的深化了解，