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英汉对照民用航空词典                                  BOEING

TURBULENT AIR PENETRATION SPEED, A speed           颠簸穿过速度，

that provides adequate maneuver margins when flying  飞机飞进不稳定的空气团时，提供适当操纵裕度的速

into unstable air masses.                          度。

TURNBUCKLE, A mechanical device with left and right 松紧螺套，

hand threads for tension adjustment in the control     具有左旋螺纹和右旋螺纹，用以调整操纵钢索张力的

cables.                                            机械装置。

U

UHF, SEE - ULTRA HIGH FREQUENCY                    超高频，

                                                     见 Ultra High Frequency

ULTRA HIGH FREQUENCY, The frequency band           超高频，

between 300 and 3000 MHz.                            频率带在300 MHZ至 3000 MHZ之间。

UNDERCARRIAGE, SEE - LANDING GEAR                  起落架，

                                                     见 Landing Gear

UNIT, One of the type, a single component.         单元，

                                                     某一类型或某一部件。

UPLOCK, A mechanism on the landing gear for keeping 上位锁，

the landing gear in the retracted position in the wheel 起落架上，用以将起落架保持在轮舱内收上位置的机

well.                                              构。

                                   TECHNICAL DICTIONARY                                163