perforation
n. 穿孔, 孔眼, 贯穿, 贯通 [化] 穿透
发音
US
/ˌpɚfəˈreɪʃən/
其它
UK
/ˌpəːfəˈreɪʃən/
词形变化
perforations
复数
perforations
释义与例句
n.
-
1.
The act of perforating or the state of being perforated.
可数 不可数 -
2.
Any opening in a solid object.
打眼
打孔
钻孔
可数 不可数 -
3.
An abnormal opening in an organ, such as a rupture.
穿孔
可数 不可数 医学 -
4.
A series of holes punched through something in order to assist in separating parts.
可数 不可数 -
5.
That portion of a surface that remains after an open disk is removed from it.
可数 不可数 数学