rotation begins in order to achieve a speed of V2 at 35    在该速度下飞机抬轮开始以便在跑道上空35英尺时达

feet above the runway.                                   到V2速度。

VREF The reference speed at the 50 foot height in a      VREF，

normal landing. This speed is generally equal to 1.3       飞机正常着陆时，高度50英尺时的基准速度。通常是飞

times the stall speed in the landing configuration.      机在着陆形态时的失速速度的1．3倍。

VTK, SEE - VERTICAL TRACK                                垂直航迹，

                                                           见Vertical Track．

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W

WALKING BEAM, A mechanical component attached to 动梁，

the main landing gear and a hinged support which helps 主起落架上，一端连在减震支柱上，另一端连在铰接支

the actuator during retraction of the main gear. 撑上，用以协助作动筒收主起落架的机械部件。

WATER LINE, A horizontal reference plane along the 水线，

fuselage for vertical measurements of the airplane. 沿着机身展向，用以量取垂直方向的距离（或长度）的

                                               水平基准面。

WATER SEPARATOR, A component in the air        除水器，

conditioning system for removing water from the air 空调系统内，用以在空气循环机的空气下游除去空气中

downstream of the air cycle machine.           的水份的部件。

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