特殊用法chromium impregnation1.铬化, 渗铬pressure impregnation1.压力注入resin impregnation1.树脂填充resinous phenol impregnation1.用树脂酚浸渗surface impregnation1.表面浸渍vacuum impregnation1.真空浸渍waxed impregnation1.蜡浸透zinc impregnation1.浸锌, 锌化