1900B. D. Jackson Gloss. Bot. Terms 274/1 Transversan Plane, that which passes through the centre of a Diatom frustule vertically to the pervalvar axis (O. Mueller).
英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。