以上来源于: WordNet
Methane is the most important of these gases, followed by black carbon and nitrous oxide.
甲烷是这些气体的最重要部分,然后才是黑碳和一氧化氮。
In several reactions a colour change indicates the formation of new products. For example, green copper carbonate reacts, when heated, to form black copper oxide and carbon dioxide gas.
在一些反应中颜色会发生变化,它表明产生了新的物质,例如,绿色的碳酸铜在加热时会分解为黑色的氧化铜和二氧化碳气体。
Black oxide film was prepared on alloy structural steel by electrochemical method.
采用电化学的方法在合金结构钢表面形成一层黑色氧化膜。
应用推荐