...足一次电可使用时间：约50分钟 Cordless using time: about 50 minutes 低振动，低噪音设计 Low vibration and noise design 充电器输出： DC4.2V 800mA Adapter Output: DC4.2V 800mA ..
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On this basis, a design criterion of small vibration and low noise for the dual circular-arc gears is given out in this paper.
在此基础上，本文给出了双圆弧齿轮传动的小振动、低噪声设计准则。
This cam design has an advantage of good gas exchange quality, better stability and low vibration & noise.
保证良好的换气质量、较低的振动和噪声。
In this paper, the low noise design method of the ship is put forward, and the design process about the vibration and noise evaluation and control is established.
为了研究控制船舶机械噪声，提出了船舶低噪声设计方法，建立了全船振动噪声评估及控制方法的设计流程。
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