light sum光和lightn.光；光线；灯；打火机；领悟；浅色；天窗adj.轻的；浅色的；明亮的；轻松的；容易的；清淡的v.点燃；变亮；照亮adv.清楚地；轻便地light source stabilizer光源稳压器light-pulse generator脉冲光源Light outcoupling layer光输出耦合层light luminescent diode半导体荧光二极管light extinction method消光法light-group sensitive光敏材料Light Scattering Iindex光散射指数light energy allocation光能分配light-weight category轻量级light spot DC voltmeter光标式直流电流表