氢是锌和硫酸反应的生成物.Hydrogen is a product of the reaction between zinc and sulphuric acid.较高的工作电压引起碳生成物的分离.The higher operating voltage causes a breakdown of carbon products.根据不同的反应条件,深入研究并建立及推广了生成物浓度数学模型.By experiment examinat...
他用天真的态度毫不慌张地回答.He answered, with simple demeanor and without embarrassment.我们俩都跳了起来, 然后我自己也有点慌张地跑到院子里去.We both jumped up, and, a little harrowed myself, I went out into the yard....