Risks of assembly occupancies have source complicacy, intrinsical dualism, effect ponderance, limited calculability and spatiotemporal characteristics.
人员密集场所的风险具有来源的复杂性 、 本质的双重性 、 后果的严重性 、 有限可计算性和时空特性.
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Thinking can indirectly and resumptively reflects intrinsical attribute and inherent rule of function of human brain.
思维是人脑对客观事物本质属性和内部规律性的间接的、概括的反映.
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