“training aid”的概念、定义、翻译、参考文献-科学参考

单词	training aid
释义	training aid [`trān·iŋ ´ād] ^ENGINEERING Any item which is developed or procured primarily to assist in training and the process of learning.
随便看	numeric keypad numeric pad numeric pager numeric printer numeric processor extension numeric punch numeric variable Numididae nunatak nun buoy n-undecylic aldehyde N unit nuplex nurse cell nurse graft nursing Nusselt equation Nusselt number nut nutating antenna nutating-disk meter nutation nutational scanner nutator nutgall

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。