供起重用的直升飞机的英文

• helicopter for crane work

• 供:    offerings
• 起重:    jack-up
• 用:    40分钟跑完全程 run the course in 4 ...
• 的:    4次方是 The fourth power of 2 i ...
• 直升飞机:    helicopter; helicogyre; heli ...