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With special raw material (raw rubber bearing) and small friction coefficient; electricity -saving.
含特殊原料原橡胶轴承，摩擦系数小，更省电。
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The advantage of rolling bearing is that they cause less friction.
滚动轴承的优点是它产生的摩擦力较小。
youdao
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The advantage of rolling bearing is that they cause less friction.
滚动轴承的优点是它产生的摩擦力较小。
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