For the arch dam which reservoir has no suitable breach to build lasher and has mass flood discharge, opening large orifice for flood discharge has great advantage.
对于库区无适宜垭口可兴建泄洪道，而泄洪量又较大的拱坝工程，在坝身中开设大孔口泄洪具有显著的优越性。
The wide range sheeting rubber made by extruder method has the advantage of high density and no air hole compared with calendaring method. It is suitable for large continuous process.
挤出法较压延生产的宽幅胶片既有致密性强、无气孔等优点，并可实现大规模连续化生产。
The wide range sheeting rubber made by extruder method has the advantage of high density and no air hole compared with calendaring method. It is suitable for large continuous process.
挤出法较压延生产的宽幅胶片既有致密性强、无气孔等优点，并可实现大规模连续化生产。
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