基本解释n.內腔；流明(光流的強度單位)同根派生 lumenal相关词英汉例句用作名詞 (n.)The innermost region of cotton is called lumen.棉纖維的最內層組織叫內腔。A former luminance unit equals to one lumen per square foot.舊制光的亮度單位等於每平方英尺流明。lumenal更多例句