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。
Sensors and active controls are used to detect the onset of dangerous vibrations, which also limit the forward speed of a helicopter.
传感器和“主动控制”被用于侦测危险震颤的先兆迹象，而这种危险震颤也会限制直升机的前飞速度。
Higher fast-forward speed requested, quick exhaust valve can be configured (optional).
操作时如需快速下降，可选配快速排气阀。
The forward speed of the glider speed will then reduce slightly, quickly stabilize and then increase.
伞翼的前进速度起初略有下降，迅速稳定之后回升。
The nonlinear hydrodynamic forces on a deep manned submersible at a low forward speed and large drift angles are determined by a model test.
通过模型试验测量大深度载人潜水器低速大漂角运动时所受到的非线性水动力。
The formulation of 2.5D theory contains most important forward speed effects on the free surface for the hydrodynamic calculation of fast ships;
二维半理论定解问题在自由面条件中保留了高速船舶流体动力计算最为重要的航速效应；
The formulation of 2.5D theory contains most important forward speed effects on the free surface for the hydrodynamic calculation of fast ships;
二维半理论定解问题在自由面条件中保留了高速船舶流体动力计算最为重要的航速效应；
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