There are variety conflicts, for instance, severity waste of land resource, low ratio of land utility, drop behind of land information management and so on.

面临着土地资源浪费严重、土地利用率低、土地信息管理落后等种种矛盾。

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In clinical practice we noticed that the successful implantation and the severity of GVHD were associated with t cell ratio of graft to receptor after pretreatment.

临床发现植入是否成功及GVHD的严重程度与预处理后供受体t细胞比例有关。

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Objective: Analyze the degree of impact of mean in-hospital day by ratio of severity.

目的：分析疑难危重率对平均住院日的影响程度。

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