金属防护层 meaning in English

coat of metal

If metal shielding exceeds a centimeter , electromagnetic protection declines drastically , he explains , because impacts by energetic particles can cause strong electromagnetic bremsstrahlung radiation that can result in extensive damage . ( bremsstrahlung is german for the “ braking radiation ” produced when a charged particle decelerates rapidly as a result of collision with another body
他进一步解释，金属防护层厚度超过一公分时，电磁防护能力将大幅降低，因为受高能粒子撞击时，会形成强大的制动辐射，造成更大的损害（制动辐射是由于带电粒子碰撞其他物体而突然减速所造成）。