“principal exponent”的概念、定义、翻译、参考文献-科学参考

单词	principal exponent
释义	principal exponent 主指数
随便看	tread band tread bar tread bar contact area tread base tread cap tread chord width tread circle tread concavity tread configuration tread contour tread contour plate tread cushioning layer tread depth tread design tread detachment tread drive dental engine treader tread gauge tread groove treadle bowl treadle drilling machine treadle drive treadle grate treadle hammer treadle lathe

科学参考收录了1248194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。