“step drilling tool”的概念、定义、翻译、参考文献-科学参考

单词	step drilling tool
释义	step drilling tool Encyclopedia 工学磨削基础理论释 step drilling tool台阶钻能够将钻孔、扩孔复合为一次进刀加工完成的钻头。又称阶梯钻、宝塔钻。
随便看	optical time domain reflectometry optical time domain reflector optical-to-electrical transducer optical tolerance optical track optical tracking optical tracking theodolite optical track pitch Optical Transfer Function optical transfer function optical transfer function measurement optical transform optical transient current spectroscopy optical transistor optical transmission hierarchy，OTH optical transmittance tester optical transmitter optical transport network optical trap optical trapping optical trapping force optical truss optical tunneling optical tweezer optical tweezers

科学参考收录了854744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。