luein.勒丰; 勒丰硬币luabbr.[化]镥（=lutetium）abbr.卢森堡（=luxembourg）luminance gray sky透明灰片基lubber grasshopper钝蝗(Romalea microptera)luminance function亮度函数luminosity paradox光度佯谬Lumbricus rubellus蚯蚓lubricator fitting润滑器配件lubrication theory润滑理论luminant mechanism发光机制lumbodorsal fascia腰背筋膜, 胸腰筋膜luminescent finish夜发光面漆