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1·Aircraft noise is unwitting of passengers.

飞机噪音是旅客不明智所至。

2·Therefore, the use of aircraft noise in the production of small, vibration-free.

所以该机在生产过程中噪音小、无振动。

3·Aircraft noise is a particular problem here since we're close to Heathrow Air port.

在这儿飞机噪音是个严重的问题，因为我们离希斯罗机场很近。

4·Planes would fly in from the north-east, primarily over water, greatly reducing the number of homes that would be affected by aircraft noise.

飞机将在东北部起降，主要途经水面，受飞机噪音污染的家庭数目由此极大地减少。

5·The measurements of aircraft noise around several airports and survey on reactions of people to aircraft noise were taken in 1984 and 1985.

1984年和1985年在几个机场对飞机噪声进行了测量，并向居民就对飞机噪声反应进行了社会调查。

6·The paper put forward the aircraft noise inside airfield evaluation method based on double indexes according to the character of military aircraft noise.

根据飞机噪声影响的特点，提出了一种基于双指标的机场内部飞机噪声评价方法。

7·This new system unifies the evaluation of aircraft noise and other environment noise effectively, and adds a new evaluation index single-event noise exposure level.

飞机噪声的共性决定其评价体系应于环境噪声评价体系统一，而飞机噪声的个性决定其评价方法必须有别于一般环境噪声评价。

8·Sound-level meter by its simple, convenient, the cost is low, the precision higher a series of merits, become one of aircraft noise measurement aspect main metering equipment.

声级计以其简单，方便，成本低，精度高等一系列优点，成为航空器噪音测量方面主要的测量仪器之一。

9·According to the standard of aircraft noise environment around Airport (GB9660-88), LWECPN (Weighted Equivalent Continuous Perceived noise Level) is selected as noise metrics.

根据《机场周围飞机噪声环境标准(GB9660 - 88)》，以计权等效连续感觉噪声级LWECPN作为机场噪声评价量。

10·A boundary element model is established, making use of the ANSYS. In the noise simulation SYSNOISE is applied to get estimable simulation results of aircraft noise close to ground.

建立了某型军用飞机的ANSYS边界元模型，用声学有限元-边界元仿真软件SYSNOISE进行了噪声仿真，获得了飞机噪声在地面附近的辐射结果。