The forces on an isolated tail are represented just like those on an isolated wing.

上的力的表示方法正和单独机翼的情形一样。

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The wing surfaces develop aerodynamic forces that support the airplane in flight.

机翼表面产生空气动力使飞机在空中飞行。

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They have been repeatedly displaced by fighting between the nation's largest guerrilla group, the Revolutionary Armed Forces of Colombia,or FARC, and a right-wing paramilitary group called the United Self-Defense Forces of Colombia.

VOA: standard.2009.03.22

Moving at 10 knots, the sub develops the same wing forces as an aircraft flying at 280 knots.

FORBES: Cruising Altitude: Minus 400 Feet

He has been abandoned by his allies from the Union of Right-Wing Forces.

ECONOMIST: A Russian coronation | The

The result is that Italy may, over the next few weeks, try to form a temporary government backed by a grand coalition of left and right-wing forces with the sole aim of changing Italy's electoral law and then going to a vote again as early as summer.

WSJ: Italy Vote Shows No Clear Winner, as Berlusconi Rises