聚合物通常以几种状态存在螺旋状(helix)、任意卷曲状(random coil)、β折板(β-sheet)、螺旋-卷曲(helix-coil)过渡区域和包覆的结块，视环境条件(如pH、离子强度和其他阳离子物种)而定。
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The second structure of LGBP has 10 % helix, 17 % sheet, 21 % turn and 53 % coil.
该蛋白的二级结构包含螺旋构象10%、折叠构象17%、转角构象21%及无规则卷曲53%。
Wire forms are springs in every sense of the word, but they are distinguished from other types of springs in that they typically do not have a helix or coil configuration to them.
线材成型弹簧不同于其它类型的弹簧，它们不是螺旋或圈状结构，而是“U”或“V”字形结构。
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