... gas discharge noise source 气体放电噪声源 internal noise source 内噪声源 man made noise source 人为噪声源 ...
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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。
A sound mode technology was proposed for exactly identifying an internal combustion engine's noise source.
为了准确识别内燃机噪声源，提出了一种声模态分析技术。
The performance of an exhaust muffler of internal combustion engine is related not only to the construction of itself, but also to the characters of the exhaust noise source.
内燃机排气消声器的实际消声性能既与消声器本身结构有关，又与排气噪声源性质有关。
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