英语翻译a primary standard is a water soluble substance that is
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英语翻译
a primary standard is a water soluble substance that is stable and available in pure form.
这里available in pure 怎么翻译
a primary standard is a water soluble substance that is stable and available in pure form.
这里available in pure 怎么翻译
一级标准物质(基准物)必须能溶于水,稳定且纯度高.
available in pure form指能以很纯,无杂质的形式存在.
如用于pH测定的一级标准物质有:邻苯二甲酸氢钾(国标GBW13103),磷酸二氢钾(GBW13104),磷酸氢二钾(GBW13105)等.
available in pure form指能以很纯,无杂质的形式存在.
如用于pH测定的一级标准物质有:邻苯二甲酸氢钾(国标GBW13103),磷酸二氢钾(GBW13104),磷酸氢二钾(GBW13105)等.
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