“simple machinery”的概念、定义、翻译、参考文献-科学参考

单词	simple machinery
释义	simple machinery Encyclopedia 理学静力学释 simple machinery简单机械人类在劳动实践中最早创造的结构简单的机械，包括杠杆、滑轮、斜面、螺旋、尖劈等。
随便看	effective enumeration effective equivalent dose effective equivalent dose rate effective error mean square effective field effective field theory effective filter response effective filtration pressure effective flow resistance effective f-number effective focal length effective focal spot effective focus length effective formal deformation Effective Formulae Handed Down for Generations effective frequency range effective fuel consumption effective functional effective genus effective group effective group action effective Hamiltonian effective height effective history effective hydrocarbon source area

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。