您要查找的是不是：
- You may also notice an increase in engine noise after landing. 飞机着陆后发动机噪音也会加大。
- The measure is of high efficiency, and the dislike vibration and noise are mitigated.It is a successful example of engineering noise reduction. 测试和实际感受表明，取得了良好的减振降噪效果，成为工程降噪的一个成功实例。
- The silencer is supposed to silence the engine noise. 据说消音器是用来消除引擎的噪声的。
- A copy of engine noise compliance letter from Environmental Protection Department. 由环境保护署发出的引擎噪音及格证明书副本乙份。
- Some coarse engine noise did leak through under acceleration, though - more than some buyers would expect in a Lexus. 一些粗糙的发动机噪音也泄漏下加速通过，但-超过部分买家希望在雷克萨斯。
- The application is required to be supported by an engine noise test report and an engine emission test report issued by an approved laboratory. 车主必须取得由认可实验室发出的引擎噪音测试报告及引擎排放测试报告,以支持其申请。
- Secondly, to the nonstationarity of diesel engine noise, this paper focuses on the extraction of time frequency feature using wavelet scalogram. 其次针对噪声信号的非平稳性，研究基于小波尺度谱噪声分量的时频特征分析。
- Because engine noise takes on complicated frequency characteristics, if original noise signal is not collected, the noise control effect will not be evident. 由于发动机噪声的频率成分比较复杂，如果采用主动降噪技术不能适时采集到源噪声信号，就达不到理想的降噪效果。
- TheCommon Rail system in particular gives engine developers the freedomthey need to reduce exhaust emissions even further, and especially tolower engine noise. 共同的铁路系统，特别是给引擎开发商自由，他们需要减少废气排放，甚至进一步，特别是降低发动机噪音。
- The expeditioners chose to use lightweight rickshas instead of four-wheel-drive vehicles, which would get stuck in the mud and spook the chiru with engine noise. 探险员选择使用轻便的人力车而不是四轮车。四轮车容易陷进泥坑里，其引擎发出的声音会惊动藏羚。
- The products of DPCA have adopted a lot of measures to reduce the wind noise, engine noise, ground noise and car parts interfering and hitting noise in the phase of developing. 神龙公司的产品在开发阶段采用了大量措施来降低风噪声,发动机噪声,地面噪声以及车上零件干涉和碰击噪声。
- The main contents of this paper as follow:Fundamental theories about vibration and noise especially precedential research on engine noise are summarized. 本文主要研究内容有:对振动噪声基本理论特别是前人关于发动机噪声的知识做了总结。
- My major is the subject of chemical engineering. 我的专业是化学工程学。
- He was trained as an engineer/in engineering. 他受过担任工程师的[工程学方面的]培训。
- That bridge was a miracle of engineering. 那座桥是工程学上的一个奇迹。
- She's studying engineering at university. 她正在大学学习工程学。
- Synthesised engine noises could even help reduce noise pollution, says Mr Peachey. 皮奇先生说，人工合成的发动机声音甚至有助于减少噪音污染。
- She works for an engineering company. 她在一家工程技术公司工作
- Geopolitical engineering; social engineering. 地理政治操作法; 社会运作法
- He chose genetic engineering to be his lifelong career. 他选择了遗传工程学作为终生的事业。
