protective mat保护软垫
protectiveadj.保护的;防卫的
protective eyeglasses护目镜
protective adaptation保护适应,保护性适应
protective side bulge防雷船腹,舷部防雷层
protective coloration保护染色
protective prevention保护性预防
protective relay unit继电器保护装置
protective resistance保护电阻
protective provisions保护条款
protective spectacles保护眼镜
protective antigen He