发布时间 ： 2019-04-29 14:20:35 UTC
类别 ： Mechanical
Page Views: 16 views
<img src="http://drr.ikcest.org/static/upload/b3/b38d6876-ee5b-11e9-a476-00163e0618d6_m.jpg" />
Input data:
Hole diameter (D): 8
Center (C): 3
Opening ratio (OA): 711.111%
Per square inch: 0.141 holes