PA system

I heard the bark of the PA system .

我听到了扩音系统的轰响声。

Well , I turned on the lights and sirens , and got on the PA system announcing ourselves as police officers .

嗯，我开了警灯和警笛，并上了扩音系统宣布我们是警察。

Elvis comes on the coffee shop PA system .

咖啡店的广播中播放着猫王的歌。

The application study of NC machine tool based on PA system

基于PA系统的数控机床的应用研究

General Design on PA System of Current Stadium in China

当前中国体育场馆扩声系统设计概要

A new , unseen voice was booming through the PA system .

一个新的，看不见的声音从扩音机里嗡嗡地传来。

The PA system is the NC system based on PC that the Germany Power Automation company developed .

PA系统是德国PowerAutomation公司开发的基于PC机的数控系统。

Indoor Outdoor as School , Bus Station , District , Park etc required PA System .

学校、车站、小区、公园等需要公共广播播音的室内外场所。

The PA system automatically adjusts the volume to compensate for variations in background noise .

公共场所扩音器自动调整音量，根据背景噪音的变化来做出选择。

Then with the case study , this PA system was applied in enterprises , whichshowed it is an effective approach .

通过案例研究，说明了该绩效考核体系的应用，表明该体系具有很强的可操作性。

PA System Explanation of NCPA Concert Hall

国家大剧院音乐厅扩声系统技术说明

This PA system can appraise the objects in quantity , quality , relativity , absolute , preciseness and fuzziness .

这样建立的绩效考核体系可以对考核对象进行定量与定性、相对与绝对、精确与模糊的考核。

Finally , a team-based Sale-Employees PA system is built , as well as conclusion and suggestion of this article are made .

最终建立了兼顾个人与团队的MW公司销售人员的新绩效考核体系，在对本文做出结论的同时也提出了相关的建议。

It is expected to make up to $ 500,000 , complete with bubble roof , fluorescent interior lighting , PA system and side steps for carrying secret service agents .

据预计，该车能拍出50万美元，它有拱起的半球状顶蓬、荧光内部照明，驾驶辅助系统以及供特工搭乘的侧踏板。

In the event that the protective equipment will be shut down , all occupants of the plant will be notified by a page over the PA system .

如果防护设备关闭，广播系统会通知工厂内的所有人员。

This requires the PA system , and other internal device with a large dynamic range and high linearity in order to avoid non-linear distortion of the signal transmission and spread of the spectrum .

这就要求系统中的功率放大器等内部器件具有很大的动态范围和高度线性，以避免传输信号的非线性失真和频谱扩散，然而这么做会导致系统成本和实现难度的增加。

We believe that the resonant PA system based on diode laser described here offers substantial advantages over other methods and appears promising as a basis for developing convenient , robust , portable instruments for environmental monitoring and process control .

此外，相对于其他方法我们描述的基于半导体激光共振光声光谱具有很大的优点，为进一步发展便利、实用、便携式环境监测仪器奠定了坚实的基础。

Study and Development of PROFIBUS PA Test System Based on Ethernet

基于以太网的PROFIBUSPA测试系统研究与开发

Influence of Compatilizer for HDPE / PA Alloy System

相容剂对HDPE/PA合金体系性能的影响

Some modifications in PA filtration system

磷酸过滤系统技改点滴

Revamping of PA filtration system

磷酸过滤系统技术改造

In this paper , the morphology and barrier property of HDPE / EVOH and HDPE / PA blending system was studied .

本文系统研究了HDPE／EVOH和HDPE／PA两种共混体系的形态、阻隔性能及力学性能。

The improved PA detection system is applied to the aluminum cylinder with defects , and the good detection results shows that the program designed is feasible . Finally , a brief summary about the detection system for engine cylinder body and experiments is made .

采用铝制圆柱形工件来作为发动机缸体的初步简单模型，并对其进行了缺陷设计。将所改进的相控阵检测系统应用于模拟缸体上进行验证实验，取得了较好的实验结果。

Study of vae / pa emulsion blended system

VAE/PA乳液共混体系研究

Fractal analysis on compatibilization of PP-g-MAH in PP / PA 6 blending system

PP-g-MAH增容PP/PA6体系的分形理论分析

Irradiated polyamide ( PA ) 1010 system was investigated by using WAXD , DSC and gel fraction measurement techniques .

通过WAXD、DSC和凝胶测定等技术对聚酰胺1010（PA1010）及其有多官能团单体BMI的PA1010体系的辐照效应进行测试和讨论。

Conclusion : The ECM accumulation correlate with PAI-1 increase in immune complexes rats , methyl-prednisone may affect ECM accumulation by interfering with PA / PAI-1 system to reach a treatment purpose .

结论：免疫复合物肾炎大鼠细胞外基质积聚与PAI1含量升高密切相关，甲基强的松龙可能通过干扰PA/PAI1系统而影响细胞外基质积聚并达到治疗作用。

The principle of high pressure filling gas and the system of polystyrene plastic microspheres filling high-pressure hydrogen are described . The pressure is up to 1.0 × 108 Pa ; the system also can get low temperature to 4.2 K.

叙述了微球高压充氢原理及聚苯乙烯塑料微球高压充氢系统，该系统可充入压力高达1.0×108Pa，并且利用调节液氦流速来控制系统温度。

Study on Spinnability and Dyeing Properties of PET / PA 6 / Montmorrinite System

PET/PA6/蒙脱土体系的可纺性和染色性能研究

The methods presented enable to determine the influence of all system constant and non-constant pa - rameters on system variables . The methods can shorten foe designing of vehicle system and reduce the tremendous cost for real vehicle testing .

该方法可以研究系统时变与非时变参数对系统变量的影响，且可以缩短汽车系统的设计周期，避免实车试验带来的巨大经济负担。