最近 ,美国某公司研究了一种抗破甲弹的装甲 ,其专利号为 6 0 2 1 70 3。这种装甲含有两个部分 ,第二部分朝着弹丸入射方向。第一部分为水平部分 ,以和弹丸入射方向成一定角度安置在主装甲上。第二部分为波状结构 ,它与第一部分之间有一变化的空间。第二部分至少有三个波状层 , Recently, a company in the United States studied the armor of a resisting armor-piercing bullet, the patent number is 6 0 2 1 70 3. This armor contains two parts, the second part toward the projectile incident direction. The first part is a horizontal part that is placed on the main armor at an angle to the incident direction of the projectile. The second part is a wavy structure with a changing space to the first part. The second part has at least three corrugated layers,