“正小齿轮”的概念、定义、翻译、参考文献-科学参考

单词	正小齿轮
释义	正小齿轮 spur pinion
随便看	return idler returning curve returning handle returning iron returning land for farming to forestry returning security money returning to service returning wave return in invested capital return interval return inward return item return jump return key return landing return laser beam return light return line return line filter return link return load return loan return loss return loss measuring set return loss test set

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。