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PEEN, To cause a more corrosion resistant surface by multiple impacting it with a hard material such as steel pellets. Term for this is Shot Peening.
Defines a position on the aircraft relative to the mean
aerodynamic chord of the wing.
r as a percentage of a fixed
mount rather than revolutions per unit time.
amount.
ERFORMANCE DATA COMPUTER SYSTEM (PDC,
PDCS), A device which provides data to achieve the
most efficient and economical operation of the airplane.
PHASE OF FLIGHT, A portion of flight specifically
devoted to accomplishing such things as takeoff, climb,
cruise, descent or landing.
這個過程名為噴丸硬化處理。
平均氣動弦百分比，
間轉數來表示低
壓壓氣機轉子的轉速。
性能數據計算機系統（PDC，PDCS），
一個能提供數據，使飛機達到最有效和最經濟的操作的
置。
行階段，
飛行中負有一定任務（如起飛、爬升、巡航、下降或
份。
PERCENT MEAN AERODYNAMIC CHORD (% MAC),
PERCENT N 1 , Expresses the speed of the low
pressure compressor roto
a
PERCENT N2 , Expresses the speed of the high
pressure compressor rotor as a percentage of a fixed
P
噴九，
為形成防腐能力更強的表面，多次用諸如鋼丸的堅硬材料沖擊表面。
用來確定飛機上一點相對于機翼平均氣動弦的位置。
N1百分數，
以一定量的百分比而不以每一單位時
N2百分數， 以一定量的百分比來表示高壓壓氣機轉子的轉速。
裝
飛
著陸）的部
英漢對照民用航空詞典 B OEING
TECHNICAL DICTIONARY 113
PHILLIPS HEAD SCREW, A cross point screw with two
en with a flat tipped Phillips head
crewdriver (see Reed and Prince).
ITCH, The rotation of an airplane around its lateral
xis.
ne
ose up and down movement controlled by the
levators (and stabilizer for trim).
ITCH RATE, The rate at which the airplane moves in
e pitch axis (nose up, nose down).
TIC TUBE, A tube facing the airstream
hich measures ram and static pressure. Used by
irplane instruments.
絲釘。由平
十字頭螺絲鉆驅動。
仰，
飛機繞橫軸運動而造成機頭的上下運動。
一側通向另一側的水平軸或橫軸。升降舵控制
頭繞此軸作上下的運動。（水平安定面則用以配平。）
俯仰率，
飛機繞俯仰軸運動（機頭向上或向下）的速率。
管，
開口面對氣流以量取空氣的總壓和靜壓，供飛機儀表使
的管道。
distinct tapers. Driv
s
P
a
PITCH AXIS, A horizontal or lateral axis passing
through the airplane from one side to the other. Airpla
n
e
P
th
PITOT STA
w
a
十字螺絲釘，
螺絲的頂面有兩個明顯的錐形十字四槽的螺
頂
俯
俯仰軸， 從飛機
機
總靜壓
用
英漢對照民用航空詞典 B OEING
TECHNICAL DICTIONARY 114
PITOT Tmeasure UBE, A tube facing the airstream which
s ram pressure.
PLA, SEE - POWER LEVER ANGLE
r
e
LEXIGLAS, A registered trade name. A transparent
r any purpose.
NEUDRAULIC, A system or process which is a
res.
PNEUMATIC (NO. 1), Cold air, controlled and/or
pressurized.
托管，
面對氣流以量取動壓（沖壓）的管子。
門桿角度，
見 Power Lever Angle
PLACARD, An attached sign providing information o
instruction.
PLENUM, An enlargement in a duct which changes th
flow characteristics of moving air. Used to remove
pulsations caused by variable airflow.
P
acrylic plastic material used for aircraft windshields and
side windows. JARGON TERM - sheet plastic of several
types and used fo
PMC, SEE - POWER MANAGEMENT CONTROL
P
combination of hydraulic and pneumatic pressu
皮
油
．
脈動。
機玻璃，
名。是飛機風檔與側風檔所用的透明丙
控制，
標牌，
提供信息或說明的附貼標志。
整流腔，
管道中用以改變運動氣流特性的擴大部份。用于消除可變氣流引起的
有
是一個注冊商品
烯酸塑膠制品。行家稱之為多用途化學合成膠片。
動力管理
見 Power Management Control． 動液壓，
推動的系統或過程。
1），
。
氣
由液壓和氣壓混合
壓縮空氣（NO．
經控制和／或增壓后的冷空氣
英漢對照民用航空詞典 B OEING
TECHNICAL DICTIONARY 115
PNEUMATIC (NO. 2), Air, controlled and/or
pressurized.
OP OUT INDICATOR, A device on a filter which
roughout a material.
ition.
POSITIVE, Definite and intentional.
（No．2），
出指示器，
到達一定的壓差時，它會從殼體內
指充滿整個物體的細微小孔或空隙。
置基準的飛行管理計算機的一種操作。
肯定的，
一定而且有意的。
P
protrudes from its housing when a specific differential
pressure is reached.
POROSITY, The term for pores or small cavities
th
POSITION SHIFT, An FMC operation used to change
　
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