镁及其合金密度小，仅为铝的64％，钢的25％，是目前密度最轻的金属结构材料之一。
The density of magnesium and its alloys is yelatively low, only accounts for 64% of aluminum density and 25% of steel density, and it is one of the lightest structural metallic materials.
镁合金是最轻质的金属结构材料，是实现军事装备轻量化和提高军事装备各项性能的理想材料。
Magnesium alloys are the lightest structural metallic materials, which can be used to reduce the weight of military equipments and improve their performance.
钛及钛合金具有优异的综合性能，是一种重要的金属结构材料，在军工、民用各个领域得到广泛的应用。
Titanium and its alloys possess excellent comprehensive properties, and they are important metal structural materials which have been widely used in various fields.
其解决过程对于新机设计或用复合材料替换金属结构的等效刚度设计均有重要的指导意义。
The solving process is of important instructiveness to new aircraft design or stiffness equivalent design in replacing metals with composites.
为延长金属结构的使用寿命，对金属结构防腐蚀涂装材料及工艺进行分析。
Corrosion resistant coating and fitting materials and their technologies for metal structures were analyzed for the purpose of prolonging service life of metal structures.
金属材料的疲劳损伤是工程界早已发现的问题，金属结构的疲劳破损问题正日益突出。
The fatigue damage of metal materials has been recognized in engineering field for a long time. And the fatigue damage problem of metal structures has become more and more serious.
本文对空气流过镍、铜材料泡沫金属结构和2种板翅结构的对流换热进行了实验研究。
Forced convection heat transfer of air in nickel and copper metal foams and two mini - fin structures was investigated experimentally.
本文对空气流过镍、铜材料泡沫金属结构和2种板翅结构的对流换热进行了实验研究。
Forced convection heat transfer of air in nickel and copper metal foams and two mini - fin structures was investigated experimentally.
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