"双钩"是个多义词，它可以指双钩（书法术语）,双钩（古代兵器）。
调整双钩的顶钩以固定在股骨头中并提供旋转稳定性。
From the Twin hook, apical hooks are deployed to gain fixation within the femoral head and to provide rotational stability.
每一个项目始于钩针链缝，钩针，最常使用单一或双钩针。
Every crochet project starts with chain stitch, and most use single crochet or double crochet.
单勾提升高度最高可至25米。双钩最高可提升至12米。
Single hook lifting height is to 25 meter, and double hook is to 12 meter.
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