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key item
军队, 后勤	article indispensable
英语 词库
key item
军队, 后勤	Item the lack of which or the faultiness of which on a piece of equipment or weapon system leads to the unavailability of the latter, by making it impossible to fulfil one of the functions planned in its military data sheet. (FRA)

key item : 5 短语, 3 学科

地球科学	1
微软	1
联合国	3