The water was reacting with the ferrous iron in the tank.水与水箱中的铁质产生化学反应.Nodules contain a mixture of ferrous and ferrous - oxy leghemoglobin.根瘤含有亚铁和亚铁一氧化豆血红蛋白的混合物.Ferrous metals , timber, and pulp seem to offer the main ...
Protons are nearly 2000 times as heavy as electrons.质子的质量几乎是电子的2,000倍。The neutrons and protons form the core of the atom.中子和质子构成了原子核.Electrons are negatively charged with electricity, protons are positively charged.电子是带负...