以下为句子列表：
英文: Abstract: In this paper the main noise source of SQ6450 type light car was judged by means of spectrum and correlation analysis of noise signal.The corresponding proposal reducing noise was presented.
中文: 文摘:对SQ6450轻型汽车进行了噪声测试，通过对噪声信号的频谱分析和相干分析，找出了主噪声源，并提出了降噪措施。
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英文: Abstract: This paper first discusses the optimum method of feature choice in the fuzzy recognition of tank under the condition of different noise source interference.Then,through quantitative analysis of the peak features of power spectrum and auto-correl
中文: 文摘:对不同声源干扰条件下坦克识别的特征优选方法进行了深入的研究和探讨，在此基础上，通过双谱谱峰特征的定量分析，对多源干扰时的坦克识别效果进行了分析对比，得出了有益的结论。
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英文: Based upon discussion on the way of noise propagation in internal combustion engine, a variety of methods for noise source identification and some of new technology occurred in this field in recent years are expounded with emphases in this paper.
中文: 摘要在论述了内燃机噪声源的传播途径基础上，着重剖析了用于内燃机噪声源识别的各种方法和近年来在该领域出现的一些新技术。
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英文: By means of measurement and analysis of noise near certain asphalt-spreader's driver's ear and near-field noise of main noise sources, the noise source whose contributions to noise near driver's ear was rather strong was identified.
中文: 摘要通过对某沥青混凝土摊铺机各主要声源的近场声和驾驶员耳旁噪声进行测试分析，识别出对驾驶员耳旁噪声贡献较大的噪声源。
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英文: It is an important content of construction ecological campus to raise sound environmental quality, through monitoring for the campus regional present situation of noise pollution and analysis, find out the major noise source that affects the area of campu
中文: 摘要提高声环境质量是营造生态型校园的一项重要内容，通过对校园区域噪声污染现状监测及分析，找出影响校园区域的主要噪声源，提出相应的污染防治对策，为创建健康、安静、舒适的生态型校园提供依据。
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