“单动机”的概念、定义、翻译、参考文献-科学参考

单词	单动机
释义	单动机 single acting engine
随便看	needle lubrication needle lubricator needle machine needle-mackered needle mesh needle-miner needle mould needle nose pliers needle nozzle needle number needle of instrument needle opening pressure needle-operated punched card needle ore needle paper needle passage needle pattern needle pellet needle penetration needle penetration test needle penetrometer needle pick-up needle piston needle piston guide needle pitman

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。