conditioning system.

PARTICLE, A very small piece of any substance or      微粒，

physical matter.                                        任何物质或实体非常细小的一部份。

PASSENGER ADDRESS SYSTEM, A system which              旅客广播系统，

provides flight crew and attendant announcements,       能使机组人员向客舱进行广播、播放音乐和发出谐音信

boarding music, and chime signals to the passenger    号的系统。

cabin.

PASSENGER ENTERTAINMENT SYSTEM, A system              旅客娱乐系统，

which can provide audio and/or video entertainment to     向旅客提供音频和／或视频娱乐服务的系统。

the passengers.

PAYLOAD, That which is carried to the destination,    业载，

such as passengers, cargo, or mail.                     由飞机送往目的地的载重，如乘客、货物或邮件。

PCA, SEE - POWER CONTROL ACTUATOR                     动力控制作动筒，

                                                          见 Power Control Actuator.

PCU, SEE - POWER CONTROL UNIT                         动力控制组件，

                                                          见 Power Control Unit．

PDCS, SEE - PERFORMANCE DATA COMPUTER                 性能数据计算机系统，

SYSTEM                                                    见 Performance Data Computer System．

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英汉对照民用航空词典                                      BOEING