灰度失真、噪声、几何失真等误差因数会影响匹配性能，本文给出了相对应的处理方法。
The error factors such as intensity distortion, noise and geometry distortion will affect matching performance, so the paper gives the opposite processing methods.
该电动机具有转动平稳、功率因数高、噪声低等特点。
The motor has characteristics of placid rotation, high power factor and low noise.
发动机的振动和噪声是影响汽车行驶舒适性的主要因数。
The vibration and the acoustic noise of the automobile are the main factors that affect the comfort for car-driving.
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