卷曲度又称卷曲率(percent crimp)、卷曲指数(crimp index)，为纤维卷曲程度指标之一。以具有卷曲的纤维的伸直长度L与卷曲长度L0之差数(L-L0)对伸直长度L的百分率表示。该指标对纤维的纺丝性能有密切关系。增大卷曲度，可提高纤维抱合力，提高细纱品质指标。但卷曲度过大，易使纤维间摩擦系数过高，不易加工。
定型-浇上中和水，将固定发型及头发卷曲度。
Fixing - permanently fixing the hair around the rods. This process is usually referred to as chemically neutralization.
结果表明：拉伸温度高的CDP纤维的收缩率、卷曲度低，而卷曲弹性率高；
It is shown that the shrinkage, crimp ratio of CDP-FDY fibers reduce and the crimp rigidity increase with the increasing drawn temperature.
反卷叶性状的材料，同一单株，从剑叶到倒三叶，卷曲度表现明显增大趋势。
The simple QTLs mapping to the leaf rolling degree of three leaves in the top of their F_2 rice plants was achieved.
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