A new concept has been proposed that the critical crosslinking-degree is a key that Gutte-Percha gets high elasticity.

指出临界交联度是杜仲胶获得高弹性的关键概念。

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It points out that the birth of Gutta-Percha rubber with high elasticity is a sign that the research-development of Gutta-Percha has entered into a new stage.

指出，杜仲胶高弹性体的出现，是其研究开发进入新阶段的标志。

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In 1848, feather balls were replaced by gutta-percha balls made from the gum of a Malaysian tree.

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He added that the gutta percha, which would have been stored as cargo, could have been released during a salvage operation.

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The gutta percha balls once belonged to golfing legend Old Tom Morris, who won the Open four times in the 1860s.

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