“下弦--底弦”概念、定义、翻译-科学时代

单词	下弦--底弦
释义	机械工程词汇手册 bottom chord 下弦，底弦
随便看	drum drying drum drying drum feeder drum feed gun drum fill drum fire drum for tanning drum granulator drum handler drumhead drum head drumhead court-martial drum heater drum kit drum language drumlin drumlin drumlin drumlin drum machine Drum Mass drum memory system drummer drummondia Drummond phlox

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。

bottom chord