Forcing a cool material to flow can generate excessive shear energy and localized degradation in the screw's flow channel.
强迫一种冷的材料流动会产生极大地剪切能，并在螺杆的流道中产生降解。
The constant shear strain point accounting for the degradation of stiffness was discussed.
对考虑刚度劣化时的常剪切应变点进行了讨论。
One solution is to maintain sufficient shear to wipe the metal surfaces constantly, since most polymer degradation occurs when polymer contacts metal for too long.
一个办法是保持足够的剪切以快速清洁机筒内表面。 因为当聚合物与金属接触太长时间后会发生聚合物降解。
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