“hierarchical index”概念、定义、翻译-科学时代

单词	hierarchical index
释义	图书馆、情报与文献学词汇手册 hierarchical index 词族索引，等级索引，族索索引
随便看	photomaton photomatrix photomechanical photomechanical art publication photomechanical process photomeson photomeson photomeson photometer photometer photometer photometer photometer photometer photometer photometer photometer photometer photometer photometer photometer photometric photometric photometric aggregometry photometric analysis

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。