尽管其它元素的组合也会阻止引火特性，铁和硫磺是这些堆积物中最常见的物质。
Iron and sulfur are the materials found most frequently in these deposits, although combinations of other elements may also exhibit pyrophoric properties.
尽管其它元素的组合也会阻止引火特性，铁和硫磺是这些堆积物中最常见的物质。
Iron and sulfur are the materials found most frequently in these deposits, although combinations of other elements may also exhibit pyrophoric properties.
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