Organo mineral compound fertilizers are digested with sulfuric acid hydrogen peroxide and nitric acid perchloric acid respectively and then their total potassium content is determined.

用硫酸—过氧化氢和硝酸—高氯酸分别对有机—无机复混肥料进行消化处理，然后进行总钾含量的测定。

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Organo mineral compound fertilizers are digested with sulfuric acid hydrogen peroxide and nitric acid perchloric acid, respectively, and then their total potassium content is determined.

用硫酸—过氧化氢和硝酸—高氯酸分别对有机—无机复混肥料进行消化处理，然后进行总钾含量的测定。

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When hydrogen sulfide reacts with the oxygen in the water, the result of that is sulfuric acid.

当硫化氢与水中的氧反应，得到的就是硫酸。

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Car batteries are filled with acid and can give off hazardous hydrogen gas if mishandled.

FORBES: What To Do If Your Car Won't Start In Cold Weather

So by building up the concentration of ammonium ions inside its retaining membrane, H. pylori is able to fend off the destructive attentions of the hydrogen ions in stomach acid and thus live free from competition by less hardy germs.

ECONOMIST: Stomach turning | The

These are an amine group, an acid group (hence the name), a hydrogen atom, and a fourth chemical group that can be any one of 20 different clusters of atoms.

ECONOMIST: Folding stuff