perforation

名词

1. 1

   撕线、齿孔、虚线孔

   Tear along the perforation to remove the coupon from the page.

   沿著撕线撕开，就能把折价券从那一页取下。

2. 2

   小孔、孔洞

   The lid has tiny perforations to let the steam escape.

   盖子上有细小的孔洞，可以让蒸气散出。

3. 3

   穿孔、破裂医学

   The scan revealed a perforation in the wall of the stomach.

   扫描显示胃壁有一处穿孔。

4. 4

   打孔、穿孔

   Perforation of the sheets is done by machine before packaging.

   这些纸张在包装前会先由机器打孔。