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The grain size and lattice constant of Boron carbide was determined by method of X ray diffraction and scanning electron microscope (SEM). 採用X射線衍射和掃描電子顯微鏡測定了碳化硼粉的粒度和點陣數。
The main methods for manufacturing boron carbide coating were given, and the advantages and disadvantages of these methods were pointed out. 討論了制備碳化硼塗層的主要方法,指出了各種制備方法的優缺點。
The new approach evaluated boron carbide coating was introduced, and the measures of improving the performances of boron carbide coating were summed up. 探討了評估碳化硼塗層的新方法,縂結了改善碳化硼塗層的途逕。
權威例句
The secret lies in the extremely light and stiff composite material made of boron carbide in an aluminium matrix used for the engine. ECONOMIST: CAR DESIGN