名词
中文翻译：Unknown
同义词：
['代表性成分，代表性元素，代表性组分例句：1. The representative element of a mineral is its chemical formula.（矿物的代表元素是它的化学式。）']
例句：
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1. The representative element of a mineral is its chemical formula.
矿物的代表元素是它的化学式。
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2.The representative element of the new drug is its effectiveness.
新药的代表元素是它的有效性。
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3. The representative element of the plant was found to be chlorophyll.
植物的代表元素被发现是叶绿素。