的垂直面。

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

                                                     爬升或下降剖面。

VERY HIGH FREQUENCY, The frequency band             甚高頻，

between 30 and 300 MHz.                              頻率帶在30 MHZ至 300 MHZ之間。

VHF, SEE - VERY HIGH FREQUENCY                      甚高頻，

                                                     見(jiàn)Very High Frequency

VHF OMNI-DIRECTIONAL RANGE, A navigational          甚高頻全向信標(biāo)，

system which tells the airplane's bearing from a VOR  一種導(dǎo)航系統(tǒng)。該系統(tǒng)可提供飛機(jī)到VOR地面臺(tái)的方

ground station and its deviation from a selected course 位以及飛機(jī)的向／背臺(tái)飛行的航道偏離。

to/from the station.

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

                                                     液體中阻礙液體流動(dòng)的阻力。

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

airplane may be operated.                             飛機(jī)可使用的最大設(shè)計(jì)速度。

                                    TECHNICAL DICTIONARY                                166

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

VNAV, SEE - VERTICAL NAVIGATION                   垂直導(dǎo)航，

                                                   見(jiàn)Vertical Navigation．