“轻微的症状，即数量性状，可能会使那些对比自闭症儿童及其同胞的研究很受挫，”研究报告的第一作者、医学博士John N.

Mild symptoms, called quantitative traits, may be confounding studies that compare children with autism to their siblings," says first author John N.

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在短花针茅荒漠草原对比研究了划区轮牧和自由放牧两种放牧制度对草地土壤理化性状的影响。

The comparative studies on the influence of rotational grazing and continuous grazing on the physical and chemical characters of soil was conducted in desert steppe of Stipa breviflora.

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方法：经引种射干与正品射干（以下简称射干）在基源、性状、薄层色谱、紫外光谱、高效液相色谱的对比实验。

Methods:The transplanted Shegan and the quality Shegan were contrasted by derivation, character, TLC, UV, HPLC.

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