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英漢對(duì)照民用航空詞典                                  BOEING

TURBULENT AIR PENETRATION SPEED, A speed           顛簸穿過速度，

that provides adequate maneuver margins when flying  飛機(jī)飛進(jìn)不穩(wěn)定的空氣團(tuán)時(shí)，提供適當(dāng)操縱裕度的速

into unstable air masses.                          度。

TURNBUCKLE, A mechanical device with left and right 松緊螺套，

hand threads for tension adjustment in the control     具有左旋螺紋和右旋螺紋，用以調(diào)整操縱鋼索張力的

cables.                                            機(jī)械裝置。

U

UHF, SEE - ULTRA HIGH FREQUENCY                    超高頻，

                                                     見 Ultra High Frequency

ULTRA HIGH FREQUENCY, The frequency band           超高頻，

between 300 and 3000 MHz.                            頻率帶在300 MHZ至 3000 MHZ之間。

UNDERCARRIAGE, SEE - LANDING GEAR                  起落架，

                                                     見 Landing Gear

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

                                                     某一類型或某一部件。

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

the landing gear in the retracted position in the wheel 起落架上，用以將起落架保持在輪艙內(nèi)收上位置的機(jī)

well.                                              構(gòu)。

                                   TECHNICAL DICTIONARY                                163