现有的重频分选算法有累积差值直方图法(CDIF)和序列差值直方图法(SDIF)。

Conventional algorithms are mainly based on histogram including cumulative difference histogram (CDIF) and sequential difference histogram (SDIF).

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对链条测试长度累积误差值进行了研究、分析和计算，给出了合理的误差值，可为生产企业普遍采用。

The study, analysis and calculation of accumulative error in chain measurement length are conducted and its rational value accepted commonly by enterprises is determined in this paper.

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