A composite electrode material comprised of carbon nanotubes and nickel oxide was obtained in a way that carbon nanotubes as base material were refluxed with nitric acid, then coated with nickel hydroxide sol, and finally fired at 400 ℃ for 2 h.
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oxidation with nitric acid 硝酸氧化
oxidized with nitric acid 硝酸氧解
digestion with nitric acid 硝酸消化
Passivation with nitric acid is required after an oxalic acid rinse.
用草酸冲洗后，必须要用硝酸钝化。
Test specimen shall be dissolved with alkali, Then treated with nitric acid.
试样用碱溶解后，用硝酸酸化。
The aluminum alloy specimens are fused with sodium hydroxide and are acidized with nitric acid.
铝合金样品用氢氧化钠分解，硝酸酸化。
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