音標(biāo)發(fā)音英式音標(biāo) [?lu?.m?n]美式音標(biāo) [?lu?.m?n]英式發(fā)音 美式發(fā)音 基本解釋n.內(nèi)腔；流明(光流的強(qiáng)度單位)同根派生 lumen相關(guān)詞英漢例句用作名詞 (n.)The innermost region of cotton is called lumen.棉纖維的最內(nèi)層組織叫內(nèi)腔。A former luminance unit equals to one lumen per square foot.舊制光的亮度單位等于每平方英尺流明。lumen更多例句英英字典劍橋英英字典(UNIT OF LIGHT) a unit for measuring the amount of light something produces(IN BODY) the inside space of a tube-shaped organ in the body, for example a blood vessel or intestinelumen劍橋字典lumen柯林斯字典