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1. The geologist conducted a placer mineral analysis to determine the composition of the deposit.
地质学家进行了矿床分析，以确定矿藏的成分。
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2. The company's research team is conducting a placer mineral analysis to identify new sources of minerals.
公司的研发团队正在进行矿床分析，以识别新的矿物来源。
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3. The government has launched a placer mineral analysis project to promote sustainable development in the region.
政府启动了一个矿床分析项目，以促进该地区的可持续发展。