Given the listing with a contact element, it reports that.
如果清单带有contact元素，它将报告。
You must identify which contact property definition or contact element set is being changed.
你必须确定哪种接触属性定义或接触单元集改变了。
The results show that the calculated results adopted by contact element are more accurate.
结果表明，采用接触单元的计算结果更为准确。
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