借助于高放大倍率的二次复型组织，观察了LF6铝合金超塑变形后的表面晶粒组织。
With the secondary duplicated model structure with high magnification, the surface grain structure of LF6 aluminum alloy superplastically deformed is observed.
采用复刚度法对某型直升机救生绞车支架进行表面阻尼处理的分析。
The complex stiffness method is adopted to carry out the analysis of surface damping treatment for the support of life winch of a certain typed helicopter.
以硫酸化蓖麻油和季铵盐（ETA）为原料，在一定的反应条件下，硫酸化蓖麻油分子中的羟基与ETA发生取代反应，合成季铵型两性表面活性剂，与其它物质复配成两性皮革加脂剂。
The amphoteric surfactant was synthesized by sulfuric castor oil and ETA. The reaction condition of surfactant were deeply studied. The amphoteric fat liquor was recombinated with other surfactants.
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