“tree ring”的概念、定义、翻译、参考文献-科学参考

单词	tree ring
释义	tree ring Encyclopedia 理学〔第四纪沉积记录〕释 tree ring树木年轮伴随着气候季节性变化，树木的形成层分生组织具有季节性活动，在树干横切面上形成逐年增长的环状木质结构。
随便看	pontoon pontophile Pontrjagin class Pontryagin Pontryagin character Pontryagin characteristic class Pontryagin characteristic number Pontryagin class Pontryagin duality Pontryagin duality theorem Pontryagin duality theory Pontryagin invariant Pontryagin-Kuratowski theorem Pontryagin maximum principle Pontryagin multiplication Pontryagin number Pontryagin operation Pontryagin product Pontryagin space Pontryagin square Pontryagin surface Pontryagin theorem Pontryagin van Kampen duality theorem Pontryagin-van Kampen duality theorem Pontypool japanned wares

科学参考收录了854744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。