Sound Identification: Timing gears, chains, and belts can produce noise varying from a high-pitched howl (fitted too tight) to a low-level chatter or growl (badly worn).
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声音辨别:正时齿轮,正时链条和正时皮带可以制造各种不同的噪音,从尖锐的啸声(安装的太紧)到低沉的卡嗒声或轰鸣声(磨损太大)。
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