Fruits of the burdock plant consist of hooks. Cockleburs get attached to clothes readily. In 1948, Swiss engineer George de Mestal found that their spines were tipped with tiny hooks that stick out from the seeds and provide a hook-and-loop construction, which grips instantly, but can be ungripped with a light force as shown in Fig. 10.
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机译：牛d植物的果实由钩组成。鸟蛤容易附着在衣服上。 1948年，瑞士工程师乔治·德·梅斯塔尔（George de Mestal）发现他们的棘刺上有细小的钩子，这些钩子从种子中伸出来，并提供了一个钩环结构，该结构可立即夹紧，但可用轻力将其解开，如图所示。 10。
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