聚合物流体的收缩流动行为是微注射成型工艺过程中影响分子取向与结构的重要因素。

Contraction flow behavior contributes significantly to the orientation and structure of molecular in micro injection molding.

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动脉越灵活，就能够在填充血液和推动血液流动的时候更好的扩张和收缩。

The more flexible an artery, the better able it is to expand as it fills with blood and contract as it pushes blood farther down the line.

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任何溢价的收缩可能意味着市场更具有流动性。

Any shrinking of this premium may suggest markets have become more liquid.

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