chromic acid

常見例句

Zinc plating chromic acid salt after the passivation, corrosion resistance can improve 6 to 8 times.
鋅鍍層經(jīng)鉻酸鹽鈍化之后，耐蝕性可提高6～8倍。
Twice technology reforms and the structure of main equipment for the recovery of chromic acid sludge by phosphoric acid method are described.
介紹該廠鉻鹽車間利用磷酸法對(duì)鉻酸渣回收利用的兩次技術(shù)改造及主要設(shè)備的結(jié)構(gòu)，以供同行業(yè)廠家參考。
After plating, the Cu and Ni layer could be removed by di- pplng in nitric acid plus ammonium nitrate solution or nitric and chromic acid solution.
這樣在電鍍后再在硝酸和硝酸銨溶液中或在硝酸和鉻酸溶液中退除銅鎳鍍層，由于鉻層不受侵蝕，仍能維持不變。