的垂直面。

VERTICAL TRACK, A climb or descent profile.         垂直航迹（VTK），

                                                     爬升或下降剖面。

VERY HIGH FREQUENCY, The frequency band             甚高频，

between 30 and 300 MHz.                              频率带在30 MHZ至 300 MHZ之间。

VHF, SEE - VERY HIGH FREQUENCY                      甚高频，

                                                     见Very High Frequency

VHF OMNI-DIRECTIONAL RANGE, A navigational          甚高频全向信标，

system which tells the airplane's bearing from a VOR  一种导航系统。该系统可提供飞机到VOR地面台的方

ground station and its deviation from a selected course 位以及飞机的向／背台飞行的航道偏离。

to/from the station.

VISCOSITY, In a liquid - it is the resistance to flow. 粘性，

                                                     液体中阻碍液体流动的阻力。

VMO, The maximum design airspeed at which the       最大使用空速，

airplane may be operated.                             飞机可使用的最大设计速度。

                                    TECHNICAL DICTIONARY                                166

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英汉对照民用航空词典                                 BOEING

VNAV, SEE - VERTICAL NAVIGATION                   垂直导航，

                                                   见Vertical Navigation．