Dictionary of Aviation下(91)

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system to a temperature gauge.
thermodynamic thermodynamic /θ%məυda|
nmk/ adjective referring to the conversion
of one form of energy into
another and how this affects temperature,
pressure, volume, mechanical
action and work
thermometer thermometer /θə|mɒmtə/ noun an
instrument for measuring temperature

Ground temperature is the temperature
recorded by a thermometer placed at
ground level.
thermoplastic thermoplastic /θ%məυ|plstk/
noun a type of plastic which can be softened
by heating then shaped, then softened
again by heating
thermosetting plastic thermosetting plastic
/θ%məυsetŋ plstk/ noun a type of
plastic which is heated while being
shaped but which cannot be softened by
reheating
If a piece of thermosetting
plastic is hit hard enough, it breaks into
pieces with straight sharp edges.
thick thick /θk/ adjective 1. of great or particular
extent between two surfaces
a
1cm thick steel bar
This sheet of aluminium
is not very thick. 2. with a large
diameter
thick wire 3. dense
thick
fog
thick cloud 4. of a consistency
which does not flow easily
thick oil
Opposite thin
thickness thickness /θknəs/ noun 1. the
extent between two surfaces
In monocoque
construction, there is no internal
stiffening because the thickness of the
skin gives strength and stability. 2. the
extent of the diameter of a wire 3. the
state or condition of being thick
thin thin /θn/ adjective 1. of small extent
between two surfaces
a thin layer of
paint 2. with a small diameter
thin
wire 3. not dense
thin mist
Altostratus
cloud is thin enough for the sun to be
dimly visible. 4. of a consistency which
flows easily
thin oil Opposite thick
thinness thinness /θnnəs/ noun 1. a small
extent between two surfaces
The thinness
of the material makes it unsuitable.
2. a small extent of the diameter of a
wire 3. the state or condition of being
thin
thorough thorough /θrə/ adjective complete

All cabin crew must have a thorough
knowledge of fire fighting equipment
and procedures.  a thorough inspection
a very detailed, comprehensive
inspection
THP THP abbreviation thrust horsepower
three-letter group three-letter group /θri letə
$rup/ noun three letters of the alphabet
found together
three-point landing three-point landing /θri pɔnt
lndŋ/ noun an aircraft landing in
which the two main wheels of the landing
gear and the nosewheel or tailwheel
touch the ground at the same time
threshold threshold /θreʃhəυld/ noun the
beginning of the part of the runway,
usable for landing
Runway visual
range is obtained by an observer standing
at the side of the runway in the
vicinity of the threshold counting the
number of markers or lights visible
along the side of the runway.
COMMENT: The threshold is marked
with a single white line on visual
runways or by eight parallel white lines
arranged longitudinally in two groups
of four each side of the runway
centreline for runways with instrument
approach/landing facilities.
throttle throttle /θrɒt(ə)l/ noun 1. a throttle
lever 2. a throttle valve  verb  to
throttle back to reduce engine power

Throttle back to increase the rate of
descent.
COMMENT: The verbs ‘open’ or
‘advance’ (= to increase engine power)
and ‘close’ or ‘throttle back’ (= to
decrease engine power) are frequently
used by instructors to explain the
required movement of the throttle lever
in the cockpit.
throttle lever throttle lever /θrɒt(ə)l livə/ noun
a device operating the throttle valve

233 tire
When starting an engine, it is inadvisable
to pump the throttle lever because of
the risk of fire.
throttle quadrant throttle quadrant /θrɒt(ə)l
kwɒdrənt/ noun an arc-shaped device
in which the throttle levers move
throttle setting throttle setting /θrɒt(ə)l setŋ/
noun the particular position of the throttle
which gives a required revolutions
per minute or power
throttle valve throttle valve /θrɒt(ə)l vlv/ noun
a device controlling the flow of fuel in
　
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