helicoptersn.直升机名词helicopter的复数形式.helicoptern.直升飞机vt.用直升飞机载送vi.乘直升机Helicopter Support Activity直升机支援活动Helicopter Support Squadron直升机支援中队Helicopter Utility Squadron效用直升机中队helicopter above the palace在宫殿上方飞的直升飞机Helicopter Direction Center直升机指挥中心helicopter aerial ambulance救护直升机Helicopter Acquisition Test直升机截获试验helicopter live-line work直升机带电作业helicopter electrical power直升机电源helicopter ground resonance直升机地面共振