The electrochemical cathode protection of the buried steel pipelines is a mature technology, but it has not been widely used in the sulfuric acid industry.
埋地钢质管道电化学阴极保护是一项成熟技术，但在硫酸工业中应用尚不多。
Foodstuff industry: the production of Miltonic acid (hydrochloric acid); extraction of edible oil (sulfuric acid); the industry of tinned fruits (hydrochloric acid).
食品工业：葡萄糖酸的生产(盐酸)；食油的提炼(硫酸)；灌装水果工业(盐酸)。
Aluminium hydroxide with 99.99% of purity was obtained by two-step purifying aluminium sulfate solution made from aluminium hydroxide and sulfuric acid with industry purity.
以工业氢氧化铝和硫酸为原料，采用两步纯化溶液法制得了纯度为99.99%的氢氧化铝粉。
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