识别及分析结果表明，冷却风扇噪声是GZ 6921型客车的主要噪声源。
Results of identification and analysis show that main noise source of the model GZ6921 bus is cooling fan.
中子噪声用于反应堆冷却剂沸腾监测有独特的作用。
The neutron noise method has been used to monitoring reactor coolant boiling.
通过对冷却塔噪声的分析，提出了冷却塔噪声治理的途径。
Through analysis of noise in cooling towers, some methods and Suggestions are put forward in the noise control of the cooling towers.
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