When the copolyester contains 10%, 15%, or 50% (mol) isophthalic acid, it displays the optical property of the thermotropic mesomorphic phase;

当间苯二甲酸的含量为10％、15％和50％（摩尔）时，共聚酯显示出热致性中介相的光学性质。

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When the copolyester contains 10%, 15%, or 50% (mol) isophthalic acid, it displays the optical property of the thermotropic mesomorphic phase;

当间苯二甲酸的含量为10％、15％和50％（摩尔）时，共聚酯显示出热致性中介相的光学性质。

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