查询词典 high strength

An unmagnetic material which permanent magnetic distance and single electron are zero is selected as magnetic diluter system. The magnetic strength of high magnetic nanomaterials CoFe2O4 has been characterized using Gouy magnetic balance by adding magnetic diluter system in samples so that the high magnetic of nanoparticles is diluted. The magnetic strength with different nanoparticles size is studied.

采用永久磁矩和未偶电子为零的无磁性物质为磁稀释体系，将纳米材料的强磁性稀释后，用Gouy磁天平表征了不同粒径系列的强磁性纳米材料CoFe2O4的磁化强度，探讨了纳米材料粒径与磁稀释体系磁化强度的关系。

The results show that the density of gritstone is decreased gradually as the temperature increasing; so that it can be ignored; the longitudinal wave velocity is linearly decreased when the temperature increasing, and decrease rate of it follows the law of conic; R is one temperature point, which makes the law of tensile strength of gritstone after high temperature follows the law of parabola; and the maximal tensile strength appears when the operative temperature is R. After the temperature is higher than 700 ℃, tensile strength is small and change range is small when the temperature is increased.

结果表明，高温后粗砂岩的密度随试验温度的升高减小幅度很小，几乎可忽略不记；高温后试件中纵波波速的传播随温度升高基本呈线性降低，而减小率呈二次曲线规律变化；存在一个温度点R，使高温后试件的抗拉强度呈开口向下抛物线关系变化，且在R温度作用后试件抗拉强度达到最大；当试验温度大于700 ℃后，试件的抗拉强度变得很小，且当温度升高时变化幅度也很小。

The result shows that the dynamic yielding strength of metal is 1~1000 times higher than its static yielding strength during the course of high pressure high velocity and instantaneous plastic deformation.

这种塑性变形与常规压力加工咖轧制）过程中金属的塑性变形在形式和形状上相似。

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可程式恒温恒湿箱、高低温试验箱、盐水喷雾试验机、干燥箱、热老化试验机、耐寒/耐黄变试验箱、冷热冲击试验机、灼热丝试验机、垂直+水平燃烧试验机、漏电起痕试验机、按键寿命试验机、插头插座负载寿命试验机、弹簧试验机、90度剥离强度试验机、破裂强度试验机、环压强度试验机、纸管/纸箱抗压试验机、耐磨擦试验机、插拔力试验机、转轴寿命耐久试验机、手机翻盖寿命试验机、鼠标滚轴寿命试验机、振动试验机、模拟汽车运输振动台、手机跌落试验机、包装跌落试验机、电线曲挠试验机、插头线突拉试验机、静态拉力试验机、线材弯折摇摆试验机、线材伸长率试验机、万能材料试验机、拉力试验机、落球冲击试验机、耳机疲劳寿命试验机、耳机拉伸寿命试验机、推拉力计、布、洛、维、肖、里、邵氏硬度计、影像测量仪、精密测绘显微镜、数字投影仪、体视显微镜、金相显微镜、读数显微镜、连续变倍显微镜、放大镜、卡尺、千分尺、标准砝码、高度计、厚度计、岩石平板、电子计重称、电子计数称、电子天平、分析天平、标准光源箱等。

The results shows that in the binary system, with the increase of reactive powder, the viscosity and relative degree of compaction of fresh paste increased whenas the fludity decreased; the strength of PRC of C+UPFA+SF is high than that of the C+UPFA and C+SF, and the strength of RPC related to the cementitious materials' relative degree of compaction and fluidity as in C+UPFA+SF system, when the relative degree of compaction was 0.699 and the fluidity was 182mm, the 7d compression strength of RPC was 150.4MPa.

实验结果表明：(1)双掺硅灰和超细粉煤灰，随活性粉末掺量的增加，新拌浆体的黏度增加，流动性下降，相对密实度提高；(2)双掺硅灰和超细粉煤灰的RPC强度远高于单掺硅灰时的强度；(3)RPC强度与体系中胶凝材料的相对密实度和流动度有关，复掺硅灰和超细粉煤灰，当密实度为0.669，流动度为182mm时，其RPC的7d抗压强度高达150.4MPa。

The high compressive strength is obtained when the modulus of the activator viz., molar ratio of SiO2/Na2O is 1.5, and the proper content of this activator evaluated by the amount of Na2O to the high-calcium fly is 10 %. The compressive strength of these samples is 63.4 MPa when they is cured at 75 oC for 8 hours flowed by curing at 23 oC for 28 days. The main gels of geopolymer and calcium silicate hydrate, and Gismondine co-exist and bond some remaining unreacted fly ash spheres.

结果表明：复合碱激发剂适宜的模数M =n(SiO2)/n(Na2O)为1.5，掺量为Na2O当量10％；适宜养护条件为，75oC养护8h，然后在23oC室温养护至所需龄期，其28d抗压强度达63.4MPa；碱激发高钙粉煤灰同时生成地聚合物凝胶和水化硅酸钙凝胶，并有类沸石矿物生成，反应产物与未反应的粉煤灰颗粒胶结成较为密实的高钙粉煤灰地聚合物。

This thesis analysis lethiferous effectiveness of high temperature pest-killing technique、 low temperature pest-killing technique、 microwave pest-killing technique and high pressure nitrogen suffocation pest-killing technique, and affect on tensile strength、 wearproof strength、 whiteness of copypaper、 writing paper、 rice paper and newsprint, affect on colour difference of red 、 blue 、 blue-black ink colored writing, and black ink 、 laser printing 、 xerox,、 gushing typing black writing caused by four physical pest-killing techniques above-mentioned.

本论文系统分析了高温杀虫法、低温杀虫法、微波杀虫法和高压充氮杀虫法的杀虫效力，并在档案保护技术学领域较系统地探讨了四种物理法杀虫处理对复印纸、书写纸、宣纸、新闻纸的抗张强度、耐破度、白度的影响，以及对红、蓝、蓝黑墨水彩色字迹，黑墨水、激光打印、静电复印、喷墨打印黑色字迹色差的影响。

The criterion is similar to hyperbolic strength criterion including uniaxial compression strength and uniaxial tensile strength, which is an extended form of Griffith-Murrell criterion essentially under the condition of polyaxial stress when hydrostatic pressure is lower, and it represents the first failure type. However, the criterion is similar to generalized Mises criterion when hydrostatic pressure is higher, and it represents the second failure type. The transition part between the two criteria represents the third failure type when hydrostatic pressure is high.

该准则包含单轴抗压和抗拉强度，在静水压力较低时，实质上它是Griffith-Murrell准则在多轴应力状态下的一种扩展形式，反映脆性岩石破坏类型1；在很高静水压力下该准则可转化为广义Mises准则，反映脆性岩石破坏类型2；而当静水压力较高时，该准则处于上述两种准则的过渡阶段，反映脆性岩石破坏类型3。

It has been warranted through experiments and practical application that rare-earths-high-aluminium heat-resistant nodular iron has some intrinsic properties which are worthy of reconimandation, namely,that it will not scale after long periods of use at 1050-1100℃, will hardly break while being hammered into castings, runners or risers as the high-temperature tensile strength reaches 14-19 kg/mm2 at 800℃ or≥l3.3kg/mm2 at 900℃, with the room temperature strength close to HT 30-50 and the unnotched impact str...

本文介绍了稀土高铝耐热球墨铸铁的生产实践、化学成分；探讨了稀土作用及其用量和控制；论述了稀土和铝加入方式以及冷却速度对金相组织的影响；并对铸造工艺、铸件缺陷及分析、耐热性能及使用效果作了阐明。试验和使用证明：稀土高铝耐热球墨铸铁在1050～1100℃长时间工作不起氧化皮，热强度800℃时，14～19kg/mm~2，900℃时≥13.3kg/mm~2，室温强度近于HT30—54，a_k≈2～6kg·M/cm~2，锤击铸件或浇冒口，很难碎裂，并能机械加工。可以认为是以我国富产资源为原料，能用各种炉子熔炼、耐热和综合机械性能均较高硅、中硅中铝球铁、高铝片墨铸铁为高的一种耐热铸铁，也是镍铬系耐热材料较好的替代品。

The invention is a method for designing and preparing binary reinforced damping magnesium alloy having medium rigidity, medium strength, high-medium damping and medium raw material cost, the prepared alloy is beneficial for balancing required elements in practical application, including optimized rigid, wide frequency band, wide strain amplitude, wide temperature zone, strength, enough high-temperature-resistance, creep resistance, toughness, price, anticorrosion treatment and heat processing, and is beneficial for solving the problems in industry, such as lacking of variety of damping magnesium base alloy, selecting and using of rare-earth resource or drawback of substitution.

设计和制备中等刚度、中等强度、上中等阻尼性能和中等原料成本的二元增强阻尼镁基合金的方法，得到的该合金有利于平衡优化刚度、宽频段、宽的应变振幅、宽温度区间、强度、足够耐高温、抗蠕变、韧性、价格、利于防腐处理和利于热加工等实际应用中需求的要素，利于解决工业上可供选择的阻尼镁基合金品种不多以及稀土资源选择利用或替代利用性不足的问题。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。