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短语

free dropping

运输, 航空 lance a caída libre
free drop
农业 de caída libre; lanzamiento libre
机械工程, 建造 caída libre; salto no anegado
 英语 词库
free drop
军队, 后勤 The dropping of equipment or supplies from an aircraft without the use of parachutes. (FRA)
美国 The dropping of equipment or supplies from an aircraft without the use of parachutes (JP 3-17) 亦见 airdrop, air movement, free fall, high velocity drop, low velocity drop
free dropping
: 2 短语, 2 学科
技术1
运输1