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forced landing. 2. an imaginary area
field of vision field of vision /fild əv v"(ə)n/
noun the area in which something can
be seen without moving the head or the
eyes
fighter fighter /fatə/ noun small, single-seat
or two-seat aircraft for use in military
conflict
The F16 is an American-built
fighter.
figure figure /f$ə/ noun 1. a diagram or
drawing
Figure 1 shows a cross-section
of an internal combustion engine.
2. a number, especially in mathematical
calculations  a head for figures good
at figures, arithmetic, accounting, etc. 
a two-figure code a code with two
numbers between 0 and 9 3. a form consisting
of any combination of points or
lines, e.g. a triangle
film film /flm/ noun 1. a thin skin or layer

An electrical element made of gold
film is sandwiched between the layers of
glass. 2. a thin covering or coating

There is a film of oil between the piston
and cylinder wall.
filter filter /fltə/ noun 1. a material or
device through which a liquid or a gas is
passed in order to separate the fluid
from solid matter or to remove
unwanted substances
fuel filter
oil
filter 2. an electric, electronic, acoustic,
or optical device used to reject signals,
vibrations, or radiations of particular
frequencies while passing others
The
tuner is a band pass filter which confines
the bandwidth passed to the
receiver to that required.  verb to pass
a liquid or gas through a filter in order
to remove unwanted substances
Fuel
is filtered before entering the carburettor.
filter cartridge filter cartridge /fltə kɑtrd"/
noun same as filter element
filter element filter element /fltə elmənt/ noun
a removable paper or metal component
in a filter housing which must be
replaced periodically
From time to
time the filter element must be removed
and cleaned or replaced. Also called filter
cartridge
fin fin /fn/ noun a fixed vertical aerofoil at
the rear of a plane, the vertical stabiliser

The fin provides directional stability
about the vertical axis. Also called vertical
stabiliser
final final /fan(ə)l/ noun the end part of a
series or process  adjective coming at
the end  final assembly the last in a
series of stages of construction of an
aircraft when all the pre-assembled
parts are put together
final approach final approach /fan(ə)l ə|prəυtʃ/
noun 1. a flight path in a direction along
the extended centre line of the runway
on which a plane is about to land
The
aspect of the runway on final approach
helps the pilot to judge height and
progress. 2. the last stage of an aircraft’s
descent before landing, from when it
turns into line with the runway to the
procedures immediately before it lands
fine fine /fan/ adjective 1. of superior
quality, skill, or appearance  a fine day
a day when the weather is good  fine
weather good weather 2. very small in
size, thickness or weight
Cirrus cloud
has a fine, hair-like appearance.  fine
powder powder consisting of very
small particles  fine spray a spray consisting
of very small drops of liquid 3. 
fine wire very thin wire 4. referring to
the pitch or blade angle setting of the
FIR 96
propeller
Fine pitch enables full
engine speed to be used on take-off and
coarse pitch allows an economical
engine speed to be used for cruising.
FIR FIR abbreviation flight information
region
fire fire /faə/ noun an area of burning
To
guard against the risk of fire, passengers
are requested not to smoke in the
toilets.  an engine fire a fire in an
engine  verb to shoot a gun, or to
launch something such as a flare or a
rocket
fire deluge system fire deluge system /faə deljud"
sstəm/ noun a system which extinguishes
fire by spraying large quantities
of water on it
A lever actuates the fire
deluge system.
fire detection system fire detection system /faə d|
tekʃən sstəm/ noun a system to
detect the presence of fire in an aircraft
fire extinguisher fire extinguisher /faər k|
stŋ$wʃə/ noun a portable device full
of foam, water, powder, etc., for putting
out fires
fireproof fireproof /faəpruf/ adjective
　
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本文鏈接地址：Dictionary of Aviation上(89)