请帮忙分析下这个GRE阅读句子the processing of ores introduced poorly cont

请帮忙分析下这个GRE阅读句子
the processing of ores introduced poorly controlled changes in the concentrations of minor and trace elements in the resultingmetal.请着重分析下此句的主谓宾,尤其是trace是个什么成分?
__dcp56cfau_3d33 1年前 已收到1个回答 举报
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浩昊灏 幼苗

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the processing of ores（ introduced poorly分词定语）主语
controlled谓语
changes in the concentrations of minor and trace elements in the resultingmetal.宾语
trace 名词修饰名词 elements

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__dcp56cfau_3d33 举报

trace是与changes in the concentrations of minor并列还是与the concentrations of minor并列？

举报 浩昊灏

changes （in the concentrations of minor and trace elements in the resultingmetal 修饰“changes”） in the concentrations of minor and trace elements在介词短语中 minor and trace elements做of 后面的宾语 in the resultingmetal 介词短语修饰elements
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