acrylic plastic material used for aircraft windshields and 是一個注冊商品名。是飛機風檔與側風檔所用的透明丙

side windows. JARGON TERM - sheet plastic of several  烯酸塑膠制品。行家稱之為多用途化學合成膠片。

types and used for any purpose.

PMC, SEE - POWER MANAGEMENT CONTROL                   動力管理控制，

                                                        見 Power Management Control．

PNEUDRAULIC, A system or process which is a           氣動液壓，

combination of hydraulic and pneumatic pressures.       由液壓和氣壓混合推動的系統(tǒng)或過程。

PNEUMATIC (NO. 1), Cold air, controlled and/or        壓縮空氣（NO．1），

pressurized.                                            經控制和／或增壓后的冷空氣。

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英漢對照民用航空詞典                                   BOEING

PNEUMATIC (NO. 2), Air, controlled and/or          壓縮空氣 （No．2），

pressurized.                                         經控制和／或增壓后的空氣。

POP OUT INDICATOR, A device on a filter which      彈出指示器，

protrudes from its housing when a specific differential 過濾器的一個裝置。到達一定的壓差時，它會從殼體內

pressure is reached.                               伸出來。

POROSITY, The term for pores or small cavities     氣孔，

throughout a material.                               指充滿整個物體的細微小孔或空隙。

POSITION SHIFT, An FMC operation used to change    移位，

the reference of present position.                   用于改變現(xiàn)在位置基準的飛行管理計算機的一種操作。

POSITIVE, Definite and intentional.                肯定的，