石蕊试纸

石蕊试纸遇到酸就变红。

Litmus paper turns red in the presence of an acid .

方法对临床确诊为胎膜早破孕妇56例及无胎膜早破孕妇40例分别采用快速免疫层析法和传统的石蕊试纸（PH试纸）对其宫颈分泌物进行检测。

Methods : The cervical secretion of 56 pregnant women diagnosed as PROM and 40 pregnant women without PROM were measured by rapid immune chromatography and litmus paper ( pH test paper ) .

您认为有某种类似石蕊试纸的东西可以帮助判断吗？

Do you see some sort of litmus test ?

做个试验吧，能把蓝色的石蕊试纸变成红色。

Test : turns blue litmus paper red .

氨气是无色的，它可把湿的红色石蕊试纸变成蓝色。

Ammonia gas is colorless which can turn wet red litmus paper to blue .

石蕊试纸呈中性反应。

Neutral reaction by litmus indicating paper .

就如一张检验你是在通往幸福还是悔恨的道路上的石蕊试纸一般。

Whats a quick litmus test to determine if youre on the path to happiness or regret ?

我们用一条石蕊试纸来试验这液体是不是酸性的。

Litmus paper can be used as an indicator of the presence of acid in a solution . We test the liquid for acidity with a strip of litmus paper .