轻型运输直升机
light transport helicopter
轻型双引擎直升机
light twin-engine helicopter
轻型教练直升机
light training helicopter
轻型多用型直升机
light multirole helicopter
美国直升机学会
Aspherical micro lens array
3 main lines of time-cost-innovation
两栖突击直升机母舰
amphibious assault helicopter ship