曝光臺 注意防騙 網曝天貓店富美金盛家居專營店坑蒙拐騙欺詐消費者

of a layer of fog or haze can seriously
reduce air-to-ground visibility.  verb to
spread out in every direction
Light diffuses
as it passes through fog.
diffuser diffuser /d|fjuzə/ noun a device in a
jet engine that alters the direction of
flow of the air entering the engine as
part of the process of compressing it
before it reaches the combustion chamber
diffusion diffusion /d|fju"(ə)n/ noun the
process of spreading out
Gas from the
turbine enters the exhaust system at
high velocities but, because of high fric-
digit 72
tion losses, the speed of flow is
decreased by diffusion.
digit digit /dd"t/ noun any number from
0 to 9
Information is provided in a
four-digit group.
digital digital /dd"t(ə)l/ adjective referring
to a system or device which uses signals
or information in the form of numbers
dihedral dihedral /da|hedr(ə)l/ noun the
angle between an upward sloping aircraft
wing and a horizontal line
diluted diluted /da|lutd/ adjective made
weaker by adding water or some other
fluid
Spillage from a lead acid battery
may be neutralised by washing with a
diluted solution of sodium bicarbonate.
diluter diluter /da|lutə/ noun a device for
decreasing the strength or concentration
of a liquid or gas
Most flight decks use
the diluter demand system in which the
oxygen is diluted with cabin air.
dimension dimension /da|menʃən/ noun a
measurable distance such as height,
length, etc., or a measurement of height,
length, etc.
Variations of atmospheric
pressure produce changes in the dimension
of the capsule chamber.
diminish diminish /d|mnʃ/ verb to decrease
or to reduce in size or importance

Friction is greatest near the ground and
diminishes with height.
At higher altitudes,
ground objects are less easily
seen because of diminished size.
diode diode /daəυd/ noun an electronic
component that allows an electrical current
to pass in one direction and not the
other
dioxide dioxide /da|ɒksad/ noun an oxide
containing two atoms of oxygen.
carbon
dioxide
dip dip to move e.g. the wing or nose of an
aircraft so that it points downwards
direct direct /da|rekt/ adjective 1. in a
straight line; by the shortest route
a
direct flight 2. complete
the direct
opposite  verb to guide or control the
movement of something
Clamshell
doors are hydraulically or pneumatically
opened, and direct the exhaust
gases forwards to produce reverse
thrust.
direct current direct current /da|rekt krənt/
noun an electric current flowing in one
direction only
An electric starter is
usually a direct current electric motor
coupled to the engine, which automatically
disengages after the engine starts.
Abbreviation DC
direction direction /da|rekʃən/ noun the
course taken by somebody or something

The Earth rotates about its own
axis in an anticlockwise direction.
directional directional /da|rekʃən(ə)l/ adjective
referring to the course taken by
somebody or something
directional gyro directional gyro /da|rekʃ(ə)n(ə)l
d"arəυ/ noun a gyroscopic instrument
which indicates direction but does not
have a north-seeking magnet
The
directional gyro should be set to correspond
with the magnetic compass.

heading indicator
directional radar beam directional radar beam /da|
rekʃ(ə)n(ə)l redɑ bim/ noun a signal
from a directional beacon enabling
the pilot to determine a bearing from the
beacon with a communications receiver
direction indicator direction indicator /da|rekʃən
ndketə/ noun an instrument which
gives direction information. Abbreviation
DI
directive directive /da|rektv/ adjective referring
to the ability of a device to send or
receive signals in straight lines
The
antenna is highly directive in transmission
and reception.  noun general or
detailed instructions from management
to staff to guide them in their work

According to the management directive,
all late arrivals should be logged.
director director /da|rektə/ noun 1. a device
with a central controlling function

　
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本文鏈接地址：Dictionary of Aviation上(68)