“principal distance”的概念、定义、翻译、参考文献-科学参考

单词	principal distance
释义	principal distance [`prin·sǝ·pǝl `dis·tǝns] ^{GRAPHIC ARTS} The perpendicular distance from the internal perspective center to the plane of a particular finished negative or print, or of a drawing.
随便看	Nathansohn's theory Naticacea Naticidae national meridian native native asphalt native coal native element native language native metal native mode native paraffin native uranium natremia natric horizon natrium natriuresis natriuretic natroalunite natrochalcite natrolite natromontebrasite natron natron lake capped steel

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。