多年来，良好的柔韧性被广泛的认为是健康的基石。

For years, flexibility has been widely considered a cornerstone of health and fitness.

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丝素改性后，聚氨酯膜不仅表面亲水性提高，而且仍具有良好的柔韧性和一定的透汽性。

PU membranes modified with SF have good flexibility as well as their hydrophilicity was improved, and certain water vapor permeability.

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用丝素蛋白或丝素肽表面改性的聚氨酯膜表现出良好的柔韧性，它能够克服丝素膜刚而脆的弱点；

Polyurethane membranes modified with silk fibroin protein(SF) and silk fibroin peptide(SP) had good flexibility. They could overcome rigid and brittle weaks of SF membrane.

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