PITCH AXIS, A horizontal or lateral axis passing       俯仰軸，

through the airplane from one side to the other. Airplane 從飛機(jī)一側(cè)通向另一側(cè)的水平軸或橫軸。升降舵控制

nose up and down movement controlled by the            機(jī)頭繞此軸作上下的運(yùn)動(dòng)。（水平安定面則用以配平。）

elevators (and stabilizer for trim).

PITCH RATE, The rate at which the airplane moves in    俯仰率，

the pitch axis (nose up, nose down).                     飛機(jī)繞俯仰軸運(yùn)動(dòng)（機(jī)頭向上或向下）的速率。

PITOT STATIC TUBE, A tube facing the airstream         總靜壓管，

which measures ram and static pressure. Used by          開口面對(duì)氣流以量取空氣的總壓和靜壓，供飛機(jī)儀表使

airplane instruments.                                  用的管道。

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英漢對(duì)照民用航空詞典                                     BOEING

PITOT TUBE, A tube facing the airstream which         皮托管，

measures ram pressure.                                  面對(duì)氣流以量取動(dòng)壓（沖壓）的管子。

PLA, SEE - POWER LEVER ANGLE                          油門桿角度，

                                                        見 Power Lever Angle．

PLACARD, An attached sign providing information or    標(biāo)牌，

instruction.                                            提供信息或說明的附貼標(biāo)志。

PLENUM, An enlargement in a duct which changes the    整流腔，

flow characteristics of moving air. Used to remove      管道中用以改變運(yùn)動(dòng)氣流特性的擴(kuò)大部份。用于消除可

pulsations caused by variable airflow.                變氣流引起的脈動(dòng)。

PLEXIGLAS, A registered trade name. A transparent     有機(jī)玻璃，