NO 20-2001 联合国欧洲经济委员会(UN/ECE)关于批准实施机动车前照灯发射非对称近光和/或远光并安装卤素白炽灯(H4灯)的统一规定的条例
Regulation of the Economic Commission for Europe of the United Nations (UN/ECE) Uniform Provisions Concerning the Approval of Motor Vehicle Headlamps Emitting an Asymmetrical Passing Beam or a Driving Beam or Both and Equipped with Halogen Filament Lamps