第一步要确定单位时间参考剂量率。
The first step is to determine the unit-time reference dose rate .
该算法在基于连接成功率算法基础上，通过计算节点在单位时间内，被动连接和主动连接数的比值进一步判断。
The algorithm computes the ratio of passive connections and initiative connections in unit time to identify P2P peer after connection responsed success rate method.
他们认为有必要进一步扩大病人规模和延长随访时间的研究，以及进一步评估已知的预后因子和集落生成单位以及甲胎蛋白水平的价值。
They suggest that further studies with more patients and longer follow-up times would be useful, as would further evaluations of known prognostic factors together with CFU and AFP levels.
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