From the correlation dimension analysis of noise signals of internal combustion engine, it was proved that engine noise signals have an obvious fractal characteristic.
通过对实际测量的内燃机噪声信号的关联维数计算分析，证明了内燃机噪声信号的分形特性。
The combustion noise control is an important aspect of internal combustion engine noise control.
燃烧噪声控制是内燃机振动与噪声控制领域的一个重要的研究方向。
The motive source of traditional lawn mower is internal combustion engine, it result in noise pollution, exist the energy problem and exhaust problem, and increase the pressure of energy.
传统草坪机一般使用内燃机作为动力源，造成了噪音污染，而且还存在能源和排放问题，增加了能源压力。
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