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為直流電的電器元件。它使用氫氧化
、氫氧化鎘和氫氧化鉀。
性，
用于解釋有些元素不易起化學作用的特性的名詞。
低噪聲程序，
一種為降低機場地區噪聲而設計的飛行航跡和爬升剖
。
是一種類似紙的材料，用以制作蜂窩結構。（NOMEX
商品名）。
只允許向一個方向流動的活門。
N
detecting the elevator and stabilizer trim condition.
degraded by an amount determined by the local
governing agency for conservative
U
p
e
c
NOMEX, Material similar to paper for honeycomb
NON-RETURN VALVE, A valve allowing flow
中
凈
以飛
鎳鎘電瓶， 將儲存的化學能變
鎳
惰
降
面
NOMEX，
是
單向活門，
英漢對照民用航空詞典 B OEING
TECHNICAL DICTIONARY 106
NONDIRECTIONAL BEACON (NDB), A radio beacon
which transmits nondirectional signals whereby the pilot
can use the ADF to determine his bearing to or from the
station.
ONVOLATILE MEMORY, A type of memory which
does not lose its contents when power is removed.
rm
binary circuit in which the output is logic 0 if any of the
inputs is logic 1.
NOSE CONE, A device on the front of the engine that
guides airflow to the primary airflow path of the engine.
the nacelle for air inlet to
e engine.
OSE DOME, Front section of the engine for
treamlining and directing airflow to the compressor.
），
能夠用自
定向儀（ADF）確定他的背臺或向臺方位。
久性存儲器，
在失去動力或電力時不會失去記憶內容的存儲器。
在或門后面緊跟著一個反向器的二進制電路。當任何一
輸人為邏輯1時，輸出為邏輯0。
一個位于在發動機前端，用于引導氣流通過發動機的主
氣流通道的裝置。
引導空氣進人發動機的短艙前段。
部整流罩，
用以整流并引導氣流進人壓氣機的發動機前段。
N
NOR GATE, An OR gate followed by an inverter to fo
a
NOSE COWL, Front section of
th
N
s
無方向信標（NDB
發射無方向信號的無線電信標臺。據此飛行員
動
永
或非門，
個
進氣整流錐，
前整流罩，
頭
英漢對照民用航空詞典 B OEING
TECHNICAL DICTIONARY 107
NOSE GEAR, The front wheels with the attachments for
NOT, A binary circuit with a single output that is always
opposite of the single input. Also called an inverter.
tion that has the shape of a "V".
t.
O-RING, A circular shaped rubber or synthetic material
sealing device for pneumatic and hydraulic systems.
PERATURE
e
in the path of flight.
OBSTACLE CLEARANCE, The process of flying the
aircraft over all obstructions under the flight path.
Which obstructions are considered and the amount of
vertical altitude required above the obstructions are
determined by local regulatory agency.
非門，
帶有始終與單一輸人相反的單一輸出。也稱作反向器。
一個“V”字形的缺口。
噴嘴，
形圈，
用于氣源和液壓系統，圓形的橡膠或合成材料制成的密
封裝置。
外界大氣溫度，
見 Outside Air Temperature
supporting the airplane on the ground.
NOTCH, An inden
NOZZLE, A shaped device for directing flow in a duc
O
OAT, SEE - OUTSIDE AIR TEM
OBSTACLE, An obstruction protruding into the airspac
前起落架，
用以在地面支撐飛機的前輪及其附件。
凹槽，
引導管道內流動方向的具有特別形狀的裝置。
O
．
越障，
道上所有障礙物的飛行過程。障礙物的選
擇和飛機距離障礙物的高度要求由當地有關管理機構決
定。
障礙物，
進人飛行航徑上空域里的障礙物。
飛機飛越其航
英漢對照民用航空詞典 B OEING
TECHNICAL DICTIONARY 108
OEW, SEE - OPERATING EMPTY WEIGHT
FFSIDE, Opposite side.
IL COOLER, A heat exchanger for cooling engine oil
by fuel flow or airflow.
ATOR, A device used to separate unwanted
ir from engine oil returning to a sump or oil tank.
OIL STRAINER, Type of oil filter.
LEO STRUT, SEE - SHOCK STRUT
NSIDE, Same side.
ll weather navigation system.
ch is not
continuous from power supply to ground due to a break
in the wiring or failure of a component.
見 Operating Empty Weight
O
O
OIL SEPAR
a
O
O
OMEGA NAVIGATION SYSTEM (ONS), A worldwide,
a
OPEN CIRCUIT, An electrical circuit whi
使用空重， ．
面，
油冷卻器，
利用燃油或空氣的流動來冷卻發動機滑油的熱交換器。
油分離器，
一個能從回油槽或油箱發動機滑油中分離出不需要的
氣的裝置。
滑油篩，
滑油油濾的一種。
液減震支柱，
見 Shock Strut
反
相反的一面。
滑
滑
空
油
．
面，
相同的一面。
個全球范圍內全天候的導航系統。
或組件損壞而導致從電源到接地點之間
　
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