“useful work”的概念、定义、翻译、参考文献-科学参考

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。

单词	useful work
释义	useful work 有效功有用功
随便看	two-address instruction format two-address instruction system two-address programme two-address system two-aerial synchronized satellite two-aircraft element two-aisle building two-aisle cabin two-anchor mooring two-and-a-half brick wall two-and-a-half dimension memory two-and-two check two-and-two twill two-aperture electronic lens two-aperture lens two-armature two-armature DC motor two armature generator two-armed spider two-armed spiral pattern two arm kneader two-arm yoke two-axis autopilot two-axis equivalent circuit two-axis hitch