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the verbs to lie, as defined here: lie –
lay – lain; to lie meaning ‘not to tell the
truth’: lie – lied – lied and lay, meaning
‘to put down’ as in ‘lay the book on the
table’: lay – laid – laid.)
life jacket life jacket /laf d"kt/ noun an
inflatable device, sometimes resembling
a sleeveless jacket, to keep a person
afloat in water Pull down the toggles
to inflate the life jacket.
life raft life raft /laf rɑft/ noun a small boatlike
vessel for use on an emergency
over water
life vest life vest /laf vest/ noun same as life
jacket You will find a life vest under
your seat.
lift lift /lft/ noun 1. a component of the
total aerodynamic force acting on an
aerofoil which causes an aeroplane to
fly In level flight, a lift force equal to
the weight must be produced. The
pilot can achieve maximum lift by pulling
hard back on the controls. 2. an
electrically operated machine for moving
people or goods between the floors
of a building (NOTE: The US English is
elevator.) verb to move to a higher
position A foot-pound is the ability to
lift a one pound weight a distance of
one foot.
COMMENT: Bernoulli’s principle states
that if the speed of a fluid increases, its
pressure decreases; if its speed
decreases, its pressure increases.
Wings are shaped so that the highspeed
flow of air that passes over the
curved upper surface results in a
decrease in pressure. Lift is created
because of the pressure differential
between upper and lower surfaces of
the wing. Lift is also created because
the angle of attack allows the airflow to
strike the underside of the wing. Daniel
Bernoulli (1700–82) was a Swiss
scientist.
light light /lat/ noun 1. brightness produced
by the sun, the moon, a lamp, etc.
2. electromagnetic radiation which can
be sensed by the eyes artificial light
light made by using electrical, gas, etc.,
power 3. a source of light such as a lamp
Switch off the navigation lights.
adjective 1. without much weight, not
heavy Aluminium is a light metal. 2.
of little force or requiring little force a
light wind a gentle wind light controls
flying controls which do not need
much pilot effort to move them 3. of lit-
137 link
tle quantity light rain light snow 4.
of thin consistency light oil oil which
pours easily
light aircraft light aircraft / lat eəkrɑft/ noun a
small, single engine aircraft generally
for private not commercial use
lighting lighting /latŋ/ noun lights or a system
of lights Cabin lighting is
switched off for take-off and initial
climb. Emergency floor lighting
guides passengers to the emergency
exits.
lightning lightning /latnŋ/ noun a powerful
and sudden electrical discharge from a
cloud Lightning is the most visible
indication of thunderstorm activity.
lightning activity lightning activity /latnŋ k|
tvti/ noun a period of time when
there are a lot of lightning flashes
lightning strike lightning strike /latnŋ strak/
noun the hitting of something by a discharge
of lightning
light plane light plane / lat plen/ noun US
same as light aircraft
likely likely /lakli/ adjective probable
rain is likely rain will probably fall
icing is likely to occur in cumulonimbus
clouds icing is often a problem if
flying in cumulonimbus clouds
limit limit /lmt/ noun a point or line past
which something should not go There
is a time limit of one hour for the examination.
The minimum age limit for
holding a PPL in the UK is 17. the
upper limit of cloud the highest point
at which there is cloud verb to restrict
or to prevent from going past a particular
point The amount of cabin baggage
is limited to one bag per passenger.
limitation limitation / lm|teʃ(ə)n/ noun the
act of limiting or the state of being limited
Limitation of the maximum
engine rpm to a little above maximum
engine cruise rpm prevents compressor
stall at the higher rpm range.
line line /lan/ noun 1. a thin continuous
mark as made by a pencil, pen, etc. or
printed Draw a line from point A to
point B. 2. a real or imaginary mark
placed in relation to points of reference
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Dictionary of Aviation下(5)
