Pay attention to if there is vibration and abnormal noise.
注意运转时有无振动,异常响声.
Listen if the engine has abnormal noise.
28听一听,发动机是否有异响.
High quality quiet caster configuration to promote easy and flexible, non-hunting walking and abnormal noise.
配置优质高级静音脚轮,推动轻松灵活, 无蛇行行走及异常噪音.
All of the means eliminate the abnormal noise and improve the interior sound quality obviously.
从而使车内的异常噪声得到了有效的控制,声音质量得到了显著改善.
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