of other metals to change the properties of the basic  在金屬中加人少量其他金屬，而改變其性質的一種金屬

metal.                                               混合物。

ALPHA SPEED, Minimum airplane speed.                 迎角速度，

                                                       飛機的最小速度。

ALPHA VANE, A small moveable airfoil on the side of  迎角葉片，

the fuselage transmitting airplane angle relative to   位于機身側的可動小翼面。為失速警告系統傳輸飛機對

airstream for the stall warning system.              氣流的相對角度。

ALTERNATE, To change from one condition to another.  交替，

                                                       由一個狀況改換到另一個。

ALTERNATE , An additional airport selected during    備降場，

flight planning, usually near the destination airport, to be 制訂飛行計劃時，除了目標機場之外，所選的另一個機

used when it is desirable to divert from the original 場。通常在目標機場附近，以備不去目標機場時，改降之

destination airport.                                 用。

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英漢對照民用航空詞典                                    BOEING

ALTERNATE AERODROME, An aerodrome to which           備用機場，

an aircraft may proceed when it becomes either         當不可能或不適宜在預選機場著陸時，可作著陸使用的

impossible or inadvisable to proceed to or land at the 機場。

aerodrome of intended landing.

ALTIMETER SETTING, The adjustment of the altimeter   高度表設定，

to account for local variations in atmospheric pressure. 根據當地大氣壓力變化而對高度表所做的調整。

ALTITUDE ACQUIRE, A digital flight control system    高度截獲，

mode to transition from climb (or descend) to level flight. 一種數字式飛行操縱系統，從爬升（或下降）改平的模