“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	box caisson box camera box canyon boxcar boxcar circuit boxcar function box-coking test box flue box fold box girder box-girder bridge box header boiler Box Hole boxing boxing shutter boxing the compass box loom box piles boxwork box wrench Boyle's law Boyle's temperature Boys camera Boys' method Boöpidae

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