英语词汇lower derivative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	lower derivative
释义	lower derivative 简明释义下导数网络释义 1 ?下导数 ... 下包络原理\|\|lower envelope principle 下导数\|\|lower derivative 下调和[的]\|\|subharmonic ... 2 ?下导出数 ... 下密度 lower density 下导出数 lower derivative 下端(点) lower extreme (point) ... 短语 1 right lower derivative 数右下导数 2 right-hand lower derivative 数右方下导数 3 right-hand upper lower derivative 数右上下导数双语例句 1 Secure Zone is a mid-range derivative of the company's Secure Fence, offering its ARaD technology at a lower price. 安全区是该公司安全防护中的中介产品的衍生工具，以一个更低的价格提供了建筑设计研究技术。 2 Methods the upper-lower solutions, monotone derivative methods, the maximum principle, comparison principle and principal eigenvalue theory were used. 方法采用上下解的方法、单调迭代法、比较原理、极值原理以及特征值理论进行了研究。
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