Adding external speakers allows pedestrians to hear the noise too.
添加外部扩声器同样能够使得行人听到汽车声音。
BAA and the Department of Transport have tried to show that adding a quarter of a million flights will not increase noise and local air pollution.
BAA公司和英国交通部试图证明增加250万架次的航班并不会增加任何的噪音和空气污染。
Brings forward a technical scheme to suppress the noise in DLOB by adding base onto control light pulse.
提出了将控制光脉冲加上直流基座有效地抑制DLOB中噪声的技术方案。
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