1、

In copper foil electrolyte a little quality of chlorine ion is titrated directly by silver nitrate typic solution nonaqueous medium-acetone silver electrode is indicator electrode. The comparable electrode is double salt bridge calomel electrode.

酸性镀铜溶液中少量的氯离子可在非水介质丙酮中,以银电极为指示电极,双盐桥甘汞电极做参比电极,用硝酸银标准溶液直接滴定。

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2、

Based on information collected by the questionnaire, by third comprehensive evaluation, the score of each indicator can be classified as excellent, good, medium, generally, poor, this five levels.

根据问卷收集到的资料进行初级综合评价、一级综合评价、二级综合评价,可以得到每个指标的得分,根据得分归类为优、良、中、一般、差五个等级。

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3、

Study on several problems in preparing culture medium type biological indicator for autoclaving

培基型高压蒸汽灭菌生物指示剂制备方法中某些问题的研究

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4、

Growth is an important measure indicator of operating situation and development prospects of listed small and medium-sized enterprise ( SMEs), and it has a lot of factors.

成长性是衡量上市公司经营状况和发展前景的一项重要的指标,影响因素颇多。

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