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...
In drilling an oil well, mud is used to lubricate the cutting bit.钻油井时, 泥浆被用来润滑钻头.Lubricate adjuster screw threads and pivot with spray lube.使用喷雾润滑油润滑调整器螺丝螺纹和枢轴.You should lubricate the wheels of your bicycle once a mont...