Thrust value is constant and thrust direction variable.

假定发动机推力大小为常值，方向可调。

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The thrust value is constant and the thrust direction is variable.

发动机推力大小为常值，方向可调。

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Speeding up the propeller's rotation increases its thrust, while shifting the blades' angles changes the direction of the thrust.

通过加快推进器的旋转来增加其推力，同时改变叶片的角度来改变推力的方向。

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Then put those ions in a magnetic field and accelerate them to extremely highly velocities in one direction to provide thrust for your satellite in the opposite direction.

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The primary feature of this new sense of direction is its thrust on sharing economic growth more equitably and allowing every citizen to benefit from the economic transformation.

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This adjusted the airflow to the insect's wings, in turn adjusting the direction of the lift and thrust that the wings produced.

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