“常规符号”的概念、定义、翻译、参考文献-科学参考

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。

单词	常规符号
释义	常规符号 ordinary symbol
随便看	double nose double notching double nozzled rocket double nursing double nut double objective microscope double offset double offset ring spanner double offset ring spanner black finished double offset ring spanner chrome plated double oil seal double open end wrench black finished double open end wrench chrome plated double operand instruction double option double order for traversing tree double O-ring rubber seal double or reverse calculation double oscillator double oscillograph double osculating plane double outlet of left ventricle double outlet of right ventricle double pain sensation double-parabolic slab