英语词汇preconcentration怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	preconcentration
释义	preconcentration 简明释义 n.预选；预浓缩；预先富集专业释义 1 化学分离富集 For that the separation and preconcentration of the samples before the analyce is requisite. 因此,对待测样品进行分离富集预处理是不可缺少的重要环节。预富集 The method provided good reproducibility in terms of both migration time and peak height. It can be successfully used for the preconcentration zwitterion. 这种方法有很好的重现性,能够成功地用于两性离子的预富集。预浓集 The latter has been packed into the micro-columns, which was used in the FI-AA systems; on-line preconcentration and separation of precious metals have been achieved. 将后者填充于FI-AA联用的微型柱内，实现了贵金属的自动在线预浓集与测定。浓缩 2 环境科学技术前处理方法 3 计算机科学技术预浓缩
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