The proof is recoated with dichromate emulsion.将这张校样重新涂以重铬酸盐乳剂.Preferally, the anion portion of the salt is permanganate, iodate, dichromate or hyperchlorite.它的阴离子部分最好是高锰酸, 碘酸, 重铬酸或过氯酸根.The main methods are: glass - elec...
The main methods are: glass - electrodes method, potassium dichromate method and statistical method.采用的主要方法有: 玻璃电极法, 重铬酸钾法,统计学方法等.Preferally, the anion portion of the salt is permanganate, iodate, dichromate or hyperchlo...