A smaller number of changed objects per transaction mean more commits to your database, each of which incurs some disk-related overhead as mentioned in Section 4.5.

每次事务修改的对象数量越少就意味着会有更多数据库提交，正如4.5节所述每次提交都会带来磁盘相关的开销。

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Recall that the B3 byte covers the path overhead and payload section.

回想一下，B3字节覆盖路径开销和有效载荷部分。

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And set up the safe state evaluation criterion of section in overhead way based on possible speed sudden change quantity.

依照此标准可评价可能速度发生突变的路段的交通安全状况。

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