The individual chemical property of the element made it a good catalyst.

这种元素的特殊化学特性使其成为一种好的催化剂。

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Good knowledge of the chemical and physical property and the test method.

掌握良好的化学和物理性能知识及测试方法？

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Good knowledge of the chemical and physical property and the test method.

掌握良好的化学和物理性能知识及测试方法？

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