The speed here, the forward speed, so it will go slower.
这里的速度,向前的,它运动得更慢。
The Sikorsky X2 has a pusher propeller mounted at the rear to obtain its high forward speed.
美国西科斯基公司的X2拥有一部安装在后方的推进螺旋桨,这使它获得高速的前飞速度。
Helicopters are limited in their forward speed by the spinning rotor blades that make hovering possible.
直升飞机那不停转动的旋翼叶片使其能够在空中悬停,但却限制了它向前的飞行速度。
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