“back-side crank pumping unit”概念、定义、翻译-科学时代

单词	back-side crank pumping unit
释义	能源科学技术词汇手册 back-side crank pumping unit 单拐多连杆抽油设备
随便看	spoils spoils of war spoils system spoils system spoke spoken American spoken chain spoken drama spoken English spoken language spoken language spoken language spoken play spoken title spokeshave spokeshave Spokesman-Review spokesperson spokesperson spokesperson tip S. polaris spoliation spoliation of policy spondee spondee

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。