3。如何正面攻破打角度倾斜装甲的硬石头(-7之类)

　　In this situation you would do (150/cos(50°)) which comes out to be 233mm of effective armor.As you can see this is much greater than the 150mm listed value and no wonder why a gun with 160mm-200mm of penetration would struggle going through it with most of it’s shots.A good rule of thumb is that armor at 60° will double it’s effectiveness。

　　在本例中你要算 (150/cos(50°))，算出来的等效装甲是233mm。你会发现这比150mm的纸面数据增加很多，也难怪160mm-200mm穿深的主炮几乎不能击穿它。凭经验来讲的话，如果装甲的倾斜角度是60°，那么它的等效装甲值就是纸面的两倍。

　　(译注：150/(cos60°)=300)

　　Normalization

　　转正效果

　　一张图概要说明咩是转正：