WATT, The basic unit of electrical power.             瓦特 （瓦），

                                                        電功率的一個基本單位。

WAYPOINT, A predetermined geographical position       航路點，

used to define a route. The waypoint is usually defined 用于決定航線的預定地理位置。通常用經、緯度來表示。

in terms of latitude and longitude.

WEB, The portion of a beam or channel that has been   腹板，

installed between the top and bottom flanges. Its prime 梁的橫截面。常見于上橫梁與下橫梁連接成工字形。主

purpose is to furnish strength.                       要作用是受力。

WHEEL SPIN UP, Rotational acceleration of the landing 機輪加速，

gear wheels at landing touchdown.                       飛機著陸接地時，起落架輪子的旋轉加速度。

WHEEL WELL, A part of the airplane for storage of the 輪艙，

landing gear (undercarriage) after retraction.          飛機的一部份，用以在起落架收起之后，收藏起落架的

                                                      那一部份。

                                     TECHNICAL DICTIONARY                                   170

----------------------- Page 172-----------------------

英漢對照民用航空詞典                                      BOEING

WIND COMPONENT, The effective wind relative to the     風向量，

horizontal axes of the airplane.                         相對于飛機水平軸的有效風。

WINDSHEAR, A change in wind speed and/or direction     風切變，

in a short distance resulting in a tearing or shearing   短距離內風力或風向的改變而形成的撕拉力和剪切力。

effect. It can exist in a horizontal or vertical direction and 可發(fā)生在水平方向或垂直方向，有時會在兩個方向上同時

occasionally in both.                                  出現。

WING CHORD PLANE, A reference plane from the tip       翼弦平面，

of the leading edge to the tip of the trailing edge of the 通過機翼前緣頂端和后緣頂端的參考平面。