本文以生物的共生演化理论为隐喻，对企业多元化战略的演进脉络进行了映射分析。
This paper takes the biological symbiosis evolution theory as the metaphor and it, carried on the mapping analysis to the enterprise multiplication strategy.
本文引入了信息熵理论，用多元联合熵来刻画航空发动机的有序性和演化方向。
Information entropy theory was introduced into this paper, and multi-joint entropy was used to depict the aero-engine's disorder parameter and evolutive trend.
本文引入了信息熵理论，用多元联合熵来刻画航空发动机的有序性和演化方向。
Information entropy theory was introduced into this paper, and multi-joint entropy was used to depict the aero-engine's disorder parameter and evolutive trend.
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