“顶梁”概念、定义、翻译-科学时代

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。

单词	顶梁
释义	房地产词汇手册顶梁 header
随便看	nitrogen balance nitrogen blow-off nitrogen-carbon balance nitrogen case hardening nitrogen circulation nitrogen cycle nitrogen cycle nitrogen cycle nitrogen cycle nitrogen cycle nitrogen cycle nitrogen cycle nitrogen dioxide nitrogen dioxide photochemistry nitrogen dioxide reaction nitrogen-doped silicon crystal nitrogen equilibrium nitrogen family explosive nitrogen fertilizer nitrogen fertilizer nitrogen fertilizer nitrogen fill valve nitrogen fixation nitrogen fixation nitrogen fixation