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Bubble nucleating and porosity were improved by adding lignin granule, and cell size of the polyurethane foam was decreased. Not only physical property but also thermal property of the material were enhanced. Compared with soft polyurethane foam, tensile strength of lignin reticulated polyurethane foam was raised by 140% at most which lignin content was 5%, and the heat-degradation temperature at the first stage was 50℃ more than soft polyurethane foam which lignin content was 10%. There had been a great improvement in heat resistance of the material. It was showed that weight of biological film reached to 10000 mg/L and 12100 mg/L when the lignin content of the polyurethane foams was 5% and 8% respectively via 30-day biofilm formation testing.

实验结果表明:1,4-二氧六环对木质素的溶解能力是最好的,可使木质素均匀分散在聚氨酯泡沫塑料中;木质素颗粒的加入可改善发泡过程的成核作用,提高聚氨酯泡沫的开孔率,降低泡沫孔径,并且能提高材料的力学、热学性能,与软质聚氨酯泡沫塑料相比,木质素含量5%的聚氨酯泡沫塑料拉伸强度最大可提高140%,木质素含量10%的聚氨酯泡沫塑料发生第一阶段失重的温度提高了50多度,材料的热稳定性大大提高;经过30 天的挂膜测试,木质素含量5%和8%的聚氨酯泡沫塑料的挂模量可分别达到10000 mg/L和12100 mg/L。

Within definite height limits, such headframes not only take the place of steel headframes with great saving in steel and builting cost, but also eliminates the detrimental effects incidental to foundation settlement, the common defect of other ty-pes of r.c.

这种类型井架在某种高度下不仅可以代替钢井架工作,使钢材得到大量节约,建筑投资少,而且它也克服了其他类型钢筋混凝土井架在软地基上易于产生不均匀沉陷影响的缺点。

The results show that the friction between hoop cable and joint will cause tension redistribution in hoop and radial cable of structure,led to uneven force distribution of the same hoop cable,increase displacement of some joints and axial stress of some bars in the lattice shell, and static properties of the structure will be obviously affected,but the dynamic and stability characteristic almost will not.

计算结果表明,环索与节点间的摩擦会导致结构环索及斜索张力重分布,致使同圈索力分布不均匀,使部分网壳杆件轴向应力和节点位移增大,对结构的静力性能影响最大,而对动力和稳定性能基本没有影响。

So,if we use common magnet and Hore component to measure the movement of the object,we can only measure in a small area. If we want to compose in a larger area a uni-gradient magnetic field,the device will be too complicated and unfit for move. It will restrict the application of Hore component in displacement measuring.

若能在简单磁场的条件下,通过自动跟随系统驱动霍尔元件跟随测量移动物体的位移,使霍尔元件尽可能地保持在均匀梯度磁场内,就可以在很大程度上增加测量范围。

Use of alloy chilled cast iron roller, a hard wear-resistant surface, cavity processing, so that the roll surface temperature uniformity.

辊筒采用合金冷硬铸铁,个面坚硬耐磨,内腔加工,使辊面温度均匀。

Use of alloy chilled cast iron roller, a hard wear-resistant surface, cavity plus ah, so that the roll surface temperature uniformity.

辊筒采用合金冷硬铸铁,个面坚硬耐磨,内腔加工,使辊面温度均匀。

There has been a great deal of speculation over the zerg choice to occupy Char, given its harsh environment and total lack of any organic life forms to exploit. Theorists are evenly split among the ideas that Char forms a useful jump-off point to the core worlds of terran and protoss space, that its inhospitable nature makes it easier for the zerg to defend it, or that Char\'s high radiation levels promote an increased rate of mutation in zerg organisms to enable forced evolution of specialist strains.

在虫族占据 Char 期间有大量的投机活动,鉴于有害的环境和缺乏有机生命形势的利用,理论家们用均匀分裂的方法在 Char 形成了一个可用的进入人类世界和神族空间的跳跃点, Char 荒凉的自然性质更利于虫族的防守,甚至 Char 的高度放射性等级促进了虫族机体组织的变异使其演变出特殊的种类。

Grind the Pine needles, dried juniper berries and Cedar together with a pestle, add frankincense and mix well before burning on charcoal in a fireproof container.

首先,研磨松针,接着将弄干的杜松子和雪松放在一起,然后加入乳香并充分的研磨混合使它们均匀的混合在一起,最后将它们放入容器里用碳烧的方式慢慢蒸煮(关于容器,尽量选择一个耐受度高的,可以耐受高热和长时间蒸煮的容器

By machining, To make the measure of area of large-grained spherical copper powder reach 70~80% of the working area of so, achieving the purpose of even alternately distributing of copper powder and POM.

通过机械加工,使大颗粒球形铜粉分布在工作面的面积达到70~80%左右,形成铜粉与改性聚甲醛基本均匀相间分布的状况。

To make the measure of area of large-grained spherical copper powder reach 70~80% of the working area or so, achieving the purpose of even alternately distributing of copper powder and POM. It has a good comprehensive ability of load-bearing, friction and wear endurance, creep resistance and heat conduction.

我们通过机械加工,使大颗粒球形铜粉分布在工作面的面积达到70~80%左右,形成铜粉与改性聚甲醛基本均匀相间分布的状况,其承载能力、摩擦磨损性能、抗蠕变能力和导热性等综合特性较好。

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推荐网络例句

Recall that, in the Kolmogorov axiomatization, measurable sets are the sets which have a probability or, in other words, the sets corresponding to yes/no questions that have a probabilistic answer.

延期开工的Kolmogorov宣布要衡量所有套职能有限许多坐标限制在于衡量子寅。换句话说,如果是/否的问题回答f可看的价值观念在许多最有限坐标,然后它有一个概率的答案。

The experimental results showed that the algorithm can filter singular points and remain fixity of the target edge.

实验表明:基于模糊理论的图像智能滤波方法比常规图像滤波方法运算量小,它既能去除奇异点,又能保持图像中目标的边缘不变性,具有很好的滤波效果。

It explains in detail how the methods of elicitation, discussion, and induction are to be used in the physics teaching.

本文根据心理学原理论述了改革初中物理教学的必要性,并对"启发、讨论、归纳法"在物理教学中的应用作了详细的阐述。