“direct labor”的概念、定义、翻译、参考文献-科学参考

单词	direct labor
释义	direct labor [dǝ`rekt `lā·bǝr] ^{INDUSTRIAL ENGINEERING} The labor or effort actually producing goods or services.
随便看	acoustic convolver acoustic coupler acoustic delay acoustic delay line acoustic detection acoustic detector acoustic dispersion acoustic domain acoustic emission acoustic energy acoustic fatigue acoustic feedback acoustic filter acoustic fix acoustic generator acoustic grating acoustic heat engine acoustic hologram acoustic homing acoustic horn acoustic image acoustic imaging acoustic impedance acoustic inertance acoustic insulation

科学参考收录了103327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。