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1)  Free inflation
自由吹胀
2)  free-blown,off-hand,offhand blowing
自由吹制
3)  free bulging
自由胀形
1.
The results of tension tests and free bulging experiments show that the superplasticity of 5182 aluminum alloy is better than that of 6016 aluminum alloy.
经超塑单向拉伸试验和自由胀形试验表明 ,铝合金 5 182在温度为 5 0 0℃ ,应变速率为 8 33× 10 - 3 s时 ,材料的伸长率达到 2 0 0 % ,应变速率敏感性指数m值达到0 2 4 ,具有一定的超塑性 ;而 6 0 16合金在 5 0 0℃时的伸长率为 89% ,应变速率敏感性指数m值为 0 13,超塑性较
4)  Free expansion
自由膨胀
1.
Strain characteristics of different expansion factors(such as free expansion,confined expansion and effective expansion,etc) and the influential factors are analyzed.
通过对自由条件下的4种不同配合比自应力混凝土和11组不同配合比、不同尺寸的自应力钢管混凝土进行连续观测,讨论了不同条件下混凝土结构所产生的自应力变化规律,分析了自应力混凝土的自由膨胀、限制膨胀和有效膨胀等应变特点及其影响因素。
5)  freely expanding ring
自由膨胀环
1.
Super-high strain rate impact tensile testing data of some resin matrix composite,such as Kevlar,glass and carbon fibers reinforced composites,were obtained by freely expanding ring experiment in which shaping of explosive cylinder and design of sample rings were optimized,and .
通过自由膨胀环实验,得到了一些芳纶纤维、玻璃纤维、碳纤维等增强的树脂基复合材料在超高压应变率下的冲击拉伸试验数据,在实验中应用了简便的应变片电测技术,并优化了装药和试样环的设计。
6)  free-expansion rate
自由膨胀率
1.
The results showed that retarder used together with sulfoaluminate expansion agent can reduce restrained-expansion rate of expansion agent, and increase its early stage free-expansion rate and expansion index, as a result reduce its efficient expansion energy.
结果表明:缓凝剂和硫铝酸盐型膨胀剂复合使用时,会降低膨胀剂的限制膨胀率,增大其早期自由膨胀率及膨胀指数,从而降低其有效膨胀能。
2.
The results showed that the synergy effect of retarders used together with superplasticizers can reduce the restrained-expansion rate and free-expansion rate of ulfo-aluminate expansive agents mortar specimens in water or air curing condition,but the expansion indexes of mortar specimens at .
结果表明:缓凝剂与高效减水剂的协同效应会降低硫铝酸盐型膨胀剂在水中养护和空气中养护条件下的限制膨胀率、自由膨胀率,增大膨胀剂砂浆水养28 d的膨胀指数,从而降低了硫铝酸盐型膨胀剂有效膨胀能的利用。
3.
The results showed that superplasticizer used together with sulfo-aluminate expansive agents can reduce restrained-expansion rate of expansive agent,and drop free-expansion rate mixing naphthalene series and amino sulfonic,increase expansion index,so resulting in the reduction of efficient expansion energy of expansive agent.
结果表明:高效减水剂和硫铝酸盐型膨胀剂复合使用时,会降低膨胀剂的限制膨胀率,降低复掺萘系和氨基的自由膨胀率,增大膨胀指数,从而降低其有效膨胀能。
补充资料:吹胀成型法
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性质:又名薄膜吹塑法。热塑性塑料加工成型方法之一。用以制环形成对折的吹塑薄膜。聚合物在挤出机内塑化熔融后,通过吹膜机头挤出,中间用气体吹胀成圆筒状,再经一对夹辊夹紧后,由另一对卷取辊卷取而得薄膜。根据吹膜的方向不同,可分为平挤上吹法,平挤下吹法和平挤平吹法三种。

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