“N. A.--N. A. (not available)”概念、定义、翻译-科学时代

单词	N. A.--N. A. (not available)
释义	水利水电词汇手册 N. A. (not available) 无数据的，无资料的；不可利用的；不可得到的
随便看	active assets active assets active assets active assets active attack active attitude control active attitude stabilization active aurora active balance active balance active balance active balance active balance active balance active balance of payment active balance of payments active balance of payments active binary active biomaterial active bond active bond crowd active bud active bud active-by-product active calcium

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。

N. A. (not available)