Oxidation - reduction reactions are important in the solubilization and precipitation of iron and manganese.氧化还原反应在铁和锰的增溶和沉淀中具有重要作用.manganese peroxide二氧化锰The variety of garnet includes almandine, pyrope, magnesium - iron...
混凝土由水泥 、 砂、石子与水掺和而构成.Concrete is composed of cement, sand and gravel mixed with water.两种液体在掺和器里均匀了一下.The two liquids homogenised in the blender.两种液体在掺和器里均匀了一下。The two liquids homogenized in the blender....
"Come on, Grace," he was urging her, "don't wait, hurry up."“快点啦，格雷丝，”他催促道，“别等了。快点。”Some ardent supporters were urging him to stand...一些热心支持者正在力劝他参选。His companions brought pressure to bear on him, urging him to stop...