短語(yǔ)詞組短語(yǔ)ph -indicator absorbance radio method 指示劑吸光度比值法ph indicator paper pH 試紙ph indicator ph 指示劑;值指示器;值指示劑;氫離子負(fù)指數(shù)指示劑pH indicator strip pH 試紙extensive ph indicator paper 廣泛pH試紙ph indicator absorptance methods ph 指示劑吸收度比值法electrometric ph indicator ph 值電測(cè)指示儀dye for pH indicator pH 指示劑用染料 返回 PH indicator