全球平均峰值连接速度增长为8.8Mbps，比上年同期相比增长30%。
The global average peak connection speed grew to 8.8 Mbps, up over 30% year-over-year.
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发现在一定滑动速度下磨损率有一峰值。
A peak of the wear rate under certain velocity was found.
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模块下移
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