基本解释n.内腔;流明(光流的强度单位)同根派生 lumenal相关词英汉例句用作名词 (n.)The innermost region of cotton is called lumen.棉纤维的最内层组织叫内腔。A former luminance unit equals to one lumen per square foot.旧制光的亮度单位等于每平方英尺流明。lumenal更多例句