对快速凝固过共晶铝硅合金材料的成分、组织结构特点，制备理论及工艺，性能及其强化机理进行了综合评述。
The composition and microstructure characteristics, processing theory and technology, properties and strengthen mechanism of this kind of materials were reviewed.
金属，如铝，也可以制备成泡沫材料。 由于金属更高的刚度，理论上，更薄金属泡沫就可以吸收聚苯乙烯泡沫所能吸收的能量。
Metals such as aluminum can also form foams -- and because of their greater rigidity, they could, in theory, dissipate as much energy as a polymer foam in a much thinner layer.
介绍了纳米粒子制备过程中的分散、表面双电层理论、干燥方法、表面修饰与表征方法。
The dispersion, double electrical layers theory, drying methods, surface modification and characterization methods in preparing process of nanometer particles were introduced in this article.
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