Was he right to change from Physics to Metallurgy?他由学物理改为学冶金是正确的 吗 ?Widely used in industry of machinc. electric power, metallurgy, chemical and oil, etc.广泛应用于机械、电力 、 冶金 、 化工、石油等行业.In metallurgy industry, iodine is used ...
Expound magnesium metallurgy with ferrosilicon process and calcium metallurgy with aluminothermic process by contracting technological conditions.通过工艺条件对比分析,阐明了硅热法炼镁与铝热法炼钙两者工艺过程、设备条件基本相同.Widely used in industry of machin...
Her brusque manner concealed a caring nature.她举止粗鲁但实际上很关心他人.She concealed her pregnancy right up to the moment of birth.她隐瞒了自己怀孕的事，直到孩子出世。From a concealed vantage point, he saw a car arrive...他从一个隐蔽的有利位置望出去，看见一辆车开了过来。Suc...
So far 57 have taken the test and all have been negative.到目前为止，参加测试的有57人，测试结果均呈阴性。He suggested a link between class size and test results of seven-year-olds.他认为7岁大的学生的测试分数和班级的规模有关系。A positive pregnancy test soon confirme...