After years of searching out my favorite European restaurants, I've found a few universal indicators for a great eating value. And this place has them all.
经过多年寻找我最喜欢的欧洲餐厅, 我发现了一些衡量高饮食价值的通用指标。而这个地方拥有所有这些。
单词 | Universal indicator |
释义 |
Universal indicator
原声例句
里奇大叔带你欧洲行 After years of searching out my favorite European restaurants, I've found a few universal indicators for a great eating value. And this place has them all. 经过多年寻找我最喜欢的欧洲餐厅, 我发现了一些衡量高饮食价值的通用指标。而这个地方拥有所有这些。
中文百科
广范试剂![]() ![]() ![]() 广用试剂,又名通用指示剂或广范试剂。一般用来指示溶液的酸碱性,并可以指示酸性和碱性范围内的各种pH值,其变色之 pH 范围如下表: pH值<4,颜色皆为红色 pH值>10,颜色皆为紫色 广范试剂是pH指示剂的一种,其适用范围为pH3~12,可用以显示不同溶液之酸碱度。虽然市面上有多种不同的广范试剂,但大部分都是从山田所获得专利的配方变化而来的。 这个专利细节可以在化学文摘找到。 有关山田的广范试剂之实验也刊登在化学教育学报。
英语百科
Universal indicator 广范试剂![]() ![]() ![]() A universal indicator is a pH indicator composed of a solution of several compounds that exhibits several smooth colour changes over a pH value range from 1 to 14 to indicate the acidity or alkalinity of solutions. Although there are several commercially available universal pH indicators, most are a variation of a formula patented by Yamada in 1933. Details of this patent can be found in Chemical Abstracts. Experiments with Yamada's universal indicator are also described in the Journal of Chemical Education. |
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