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jumbo jet (informal )
jumbo jet jumbo jet /d"mbəυ d"et/ noun a
large wide-bodied aircraft capable of
carrying several hundred passengers
jump jet jump jet /d"mp d"et/ noun a jet aircraft
with fixed wings that can take off
and lands vertically
junction junction /d"ŋkʃən/ noun a place
where two things meet
the junction of
two wires
junction box junction box /d"ŋkʃən bɒks/
noun electrical unit where a number of
wires can be connected together
K
KK symbol kelvin
katabatic katabatic /ktə|btk/ adjective
referring to a cold flow of air travelling
down hillsides or mountainsides
Due
to katabatic effects, cold air flows
downwards and accumulates over low
ground. Compare anabatic
katabatic wind katabatic wind /ktə|btk wnd/
noun a wind which occurs when the air
in contact with the slope of a hill is
cooled to a temperature lower than that
in the free atmosphere, causing it to
sink. Compare anabatic wind
kelvin kelvin /kelvn/ noun the base SI unit
of measurement of thermodynamic
temperature. Symbol K (NOTE: Temperatures
are shown in kelvin without a
degree sign: 20K. Note also that 0°C is
equal to 273.15K.)
kerosene kerosene /kerəsin/, kerosine noun
a thin fuel oil made from petroleum

Kerosene will only burn efficiently at, or
close to, a ratio of 15:1.
Kevlar Kevlar /kevlə/ noun a trademark for a
light and very strong composite material

Kevlar and carbon fibre account
for a large percentage of a modern jet
airliner’s structure.
key key /ki/ noun a piece of metal used to
open a lock
kgkg symbol kilogram
kHz kHz symbol kilohertz
kick-back kick-back /kkbk/ noun the tendency
of the engine to suddenly reverse
the rotation of the propeller momentarily
when being started
On most modern
engines the spark is retarded to topdead-
centre, to ensure easier starting
and prevent kick-back.
kilo kilo /kiləυ/ noun same as kilogram

This piece of luggage weighs 15 kilos.
kilo- kilo- /kləυ/ prefix one thousand
kilogram kilogram /klə$rm/ noun a measure
of weight equal to one thousand
grams
This piece of luggage weighs
15 kg. Abbreviation kg (NOTE: It is written
kg after figures.)
kilohertz kilohertz /kləh%ts/ noun a unit of
frequency measurement equal to one
thousand Hertz. Abbreviation kHz
kilometre kilometre /k|lɒmtə/ noun a measure
of length equal to one thousand
metres (NOTE: It is written km with figures:
150 km. The US spelling is kilometer.)
kilowatt kilowatt /kləwɒt/ a unit of measurement
of electricity equal to 1000 watts.
Abbreviation kW
kilowatt-hour kilowatt-hour /klə|wɒt aυə/ noun
a unit of 1000 watts of electricity used
for one hour. Abbreviation kW-hr
kinetic kinetic /k|netk, ka|netk/ adjective
referring to motion or something
produced by motion  kinetic heating
the heating of aircraft skin by friction
with the air as it moves through it
kinetic energy kinetic energy /ka|netk enəd"i/
noun energy of motion
kit kit /kt/ noun a set of items used for a
specific purpose
A physician’s kit
containing surgical equipment would
be available to a qualified doctor
assisting crew with major medical
problems.
knob knob /nɒb/ noun 1. a rounded handle

door knob 2. a rounded control switch
or dial
When the control knob is
moved from the central position, the
131 kt
ailerons are moved. 3. a round button
such as on a receiver
Turn the knob to
increase the volume.
knot knot /nɒt/ noun a unit of speed equal
to one nautical mile per hour, approximately
1.85 kilometres or 1.15 statute
miles per hour. Abbreviation kt (NOTE:
Wind speeds in aviation are usually
given in knots.)
COMMENT: American light aircraft
manufactured prior to 1976 had
airspeed indicators marked in statute
miles per hour. Knot means ‘nautical
miles per hour’. It is therefore incorrect
to say ‘knots per hour’.
knowledge knowledge /nɒld"/ noun familiarity,
awareness or understanding gained
through experience or study
A knowledge
of the factors which affect surface
temperatures will contribute a great
　
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本文鏈接地址：Dictionary of Aviation上(120)