On the contrary, when melt temperature is too low, the melt viscidity becomes intensive, so cavitation and acoustic streaming are in no effect.

如果施振温度过低，熔融合金粘度就会增大，致使声空化和声流效应发挥不了应有的作用。

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For these low melting point polyesters with different content of modifier r, the influence of temperature on viscosity of melt must be paid attention during post processing.

对于改性剂r含量不同的低熔点聚酯，在后加工时应充分考虑到温度对熔体粘度的影响。

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Moreover, the low molecular weight and higher temperature are favorable to reduce the melt viscosity, to increase the critical shear rate and to improve the apparent quality of extrudates.

较低的分子量和较高的温度有利于提高临界剪切速率，改善挤出物外观质量和降低熔体粘度。

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