Thaum cov concentration ntawm hydrochloric acid tov nce los ntawm 2% mus rau 25%, cov kua qaub ntxuav ceev nce kaum npaug. Thaum siv hydrochloric acid tov rau steel yeeb nkab acid ntxuav, qhov concentration ntawm 2% mus rau 26% thiab qhov kub ntawm 30℃mus rau 60℃yog qhov zoo tshaj plaws.
32. Qhov zoo tshaj qhov kub thiab txias rau pickling yog dab tsi?
Dec 15, 2025
Xa kev nug
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