分析了模头流道结构和熔体在圆环型材挤出模中的流量，为环类型材挤出模设计提供了依据。

Analyzing the die channel structure and the melt flow of the circle profile in the extrusion die provides the basis of the die design for the circle profile.

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INVALID状态指出该信息包与任何已知的流或连接都不相关联，它可能包含错误的数据或头。

INVALID state indicates that the packet is not associated with any known stream or connection and it may contain faulty data or headers.

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中介流现在可以操作SOAP标头。

Mediation flows can now manipulate SOAP headers.

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