精选优质文档-倾情为你奉上灯光和照明系统light and lighting sytem照明系统lighting system照明设备lighting equipment灯具lamp组合灯grouped lamps等效灯具Equivalent lamps 成对灯具lamps constituting a pair偶数灯even number of lamps单功能灯具Single-function lamp 混合灯reciprocally incorporated lamp双向灯具Reciprocally incorporated lamps 相互依存的灯系统Interdependent lamp system 相互依存的灯Interdependent lamp封闭式灯sealed -beam lamp封闭式前照灯sealed beam headlamp半封闭式前照灯semi-sealed beam headlamp内藏灯（暗灯）concealable lamp前照灯headlamp 外装式前照
