功能：测试眼镜的上、下、左、右及侧面是否能完全保护眼睛

measuring the protection of the spectacles for the eyes from the inferior,superior,left,right,and lateral side
符合标准：EN168

功能：测试眼镜的上、下、左、右及侧面是否能完全保护眼睛

measuring the protection of the spectacles for the eyes from the inferior,superior,left,right,and lateral side
符合标准：EN168

功能：测试眼镜的上、下、左、右及侧面是否能完全保护眼睛

measuring the protection of the spectacles for the eyes from the inferior,superior,left,right,and lateral side
符合标准：EN168