Very little has been published on the optimum flow rate for particular materials and even if this were known the relationship between optimum flow rate and gate width would probably be complex because of the large number of variables involved.

在特定材料的流動速率優(yōu)化方面婷婷激情偷拍自慰，已經(jīng)發(fā)表的文獻很少黄片av毛片伊人久久，并且即使已知優(yōu)化流動速率和澆口寬度之間的關(guān)系，也會由于包含很多變量而使得情況變得復雜免费进的黄色网站。