等比
- 与 等比 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
If a tension overload pluses constant amplitude spectrum, the result shows that the tension overload prolongs the fatigue life, and the bigger overload ratio is, the more apparent the effect of magnitude ratio is, and the effect of prolonging life is decreased with the corrosion extent increasing.
实验结果表明,在等幅载荷谱前加上一个拉伸超载,并定义该超载值与等幅载荷谱的峰值比为超载比,那么超载比越大,超载对无裂纹试件的增益作用越明显,但在超载比一定的情况下,超载的增益作用由于腐蚀程度的增加而降低。
-
The increments of the contraction ratio and the convergence angle strengthen the internal compression.
用N-S方程模拟了一系列典型二元高超声速进气道内压缩通道及隔离段模型,模拟发现内压缩通道及隔离段增压比、温升比和总压恢复系数等性能参数主要受面积收缩比、内压缩通道收缩角、隔离段长高比等几何参数以及内压缩通道进口马赫数、密度、附面层厚度等流动参数的影响。
-
The fabrication of fibers was attempted. The copolymers, the copolymers containing MOCT and the copolymer films containing MOCT were characterized by using Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy, Differential Scanning Calorimetry, Thermogravimetric Analyzer and X-ray Diffraction etc. The conclusions were summarized as following,1. The AN/MMA copolymers were testified that copolymerization of most AN and MMA occurred and the ratio of AN and MMA in copolymer was less than the ratio of monomers. With the increase of the contents of MMA, the viscosity of copolymer solution, molecular weight and decomposition temperature of copolymers increase.
通过傅立叶变换红外光谱、扫描电子显微镜、差示扫描量热分析、热重分析、X-射线衍射分析等测试方法对得到的AN/MMA共聚物、含有正十八烷微胶囊的共聚物以及共聚物膜等进行了测试和分析,得到如下的研究结论: 1、丙烯腈—甲基丙烯酸甲酯之间发生了聚合反应,共聚物的组成比略小于投料比;共聚物的粘度和分子量随着第二单体MMA加入量的增加有增大的趋势;第二单体加入量的增大使得共聚物的分解温度升高,通过热重分析证实当AN/MMA摩尔比为85/15时,共聚物的耐热稳定性较高。
-
The type and the size of epidermis cell, epidermis hair, stomata apparatus and inside blade tissue;Ascertaining by measuring the epidermis cell thickness of the stem, the type and density of the epidermis hair,the density of lenticel; the thickness of cortex, phellogen, vascular tissue and pith;And calculate the ratio of cortex and radius, the ratio of vascular tissue and radius, the ratio of pith and radius…….
测定出叶片表皮细胞、角质层和厚角组织厚度,表皮毛、气孔器和叶内组织的类型、大小等;测定出茎的表皮细胞厚度,表皮毛的类型和密度,皮孔密度,皮层、栓皮层、维管组织和髓的厚度,计算皮层与半径之比,维管组织与半径之比,髓与半径之比等。
-
Based on the fundamental principles of the improved method mentioned above, multi-functional computation software package, which can be used to analyze effectively the interference effects of random flaws in plane problem, boundary problem and space problem, is compiled and a number of problems involved in the interference effects of different kinds of flaws such as random equal length through-cracks, random branched throughcracks, random unequal length through-cracks, random holes to through-cracks, unequal length edge cracks, equal length and distance multiple edge cracks, random notches with different aspect ratio, random notch to edge crack, non-coplanar surface cracks with different aspect ratio, staggered surface cracks, surface crack to embedded crack and embedded cracks near free boundary are analyzed and computed by the package.
依据上述改进法的基本原理,本文编制了能有效地分析平面问题,边界问题及空间问题的任意缺陷群相互干涉效应的多功能计算软件包。据此,本文分析计算了各类缺陷群。诸如,任意等长裂纹群。任意折裂纹群;任意不等长裂纹群,任意孔与裂纹群,不等长边裂纹群。等长等间距多裂纹群,任意形状比缺口群,任意缺口与边裂纹,非共面不同形状比表面裂纹群,交错型表面裂纹群,表面裂纹与埋藏裂纹群及自由边界附近埋藏裂纹群等的相互干涉效应问题。
-
By employing such a method, 5 series of elastomers, including natural rubbers, elastomeric polyester fibers and ethylene-octene, ethylene-methyl acrylate as well as SIS triblock copolymers, were investigated with the purpose of studying elongation induced phase structure and mobility changes of the samples. For NR samples, it was demonstrated that there exists a small amount of crystals at RT even for unelongated samples. For both NR and the soft segment of PEE, with the increase of elongation ratio, the elongation-induced crystallinity increases almost linearly in a certain region of R, in accord with the increase of the lamellar thickness of the crystals; The behavior of ethylene copolymers, in terms of elongation induced morphorpholgy changes, are quite different from NR and PEE. The crystals are found to be gradually destroyed with the increase of R, with accord with the decrease of the lamellar thickness; The motional behavior of the soft segment of SIS, changes from "liquid" to "solid", in terms of 13C NMR spin-lattice relaxation.For many of the aformented samples, the dependence of 13C spin-lattice relaxtion time T1 on R are different for different groups, indicating that the changes of mobility at MHz frequency region with elongation are different for different groups.
通过对天然橡胶、聚醚酯嵌段共聚物、乙烯-辛烯共聚物、乙烯-丙烯酸甲酯共聚物、SIS等高分子弹性体样品聚集态结构和分子运动的研究,获得了一些新的实验结果,如:给出了确切的实验证据,证明了室温下未拉伸的天然橡胶样品中存在着微量的结晶;发现随着拉伸比增加,天然橡胶及聚醚酯样品的软段部分会出现拉伸诱导的结晶,且结晶度在一定范围内呈现近似线性的增加,所形成晶片的厚度也随之逐渐增加;而乙烯共聚物随着拉伸比的增加,原有的结晶会被逐渐破坏,晶片厚度逐渐变薄,结晶中的缺陷逐渐增加;随着拉伸比的增加,SIS中PI软段部分的核磁共振弛豫行为会出现从液态到固态的转变等;在对上述多个体系的研究中,还发现不同基团的自旋-晶格弛豫时间随着拉伸比呈现不同的变化趋势,表明不同基团的高频运动随拉伸比增加有不同的变化规律。
-
In the preparation method, zirconium is mixed with benzenephosphonic acid according to the molar ratio of 1:2 to 1:4, and Alpha-zirconium phenyl phosphonate is produced by centrifugal washing after one to five days of crystallization under the temperature of 50 DEG C to 100 DEG C; deionized water is added in order to prepare Alpha-zirconium serosity, the solid content of which is 4 percent to 8 percent; the Alpha-zirconium serosity is granulated and dried by a rotary spray dryer, the feeding speed of the Alpha-zirconium serosity imported into an atomizer is controlled between 20ml/min and 80ml/min, and the temperature of a hot air inlet is controlled between 120 DEG C and 200 DEG C.
本发明涉及一种大比孔容微球α-苯膦酸锆及其制备方法,其颗粒尺寸为10~100μm,比孔容为0.908cc/g,比表面积为125.8m 2 /g;其制备方法是将锆和苯膦酸以摩尔比1∶2~1∶4混合,在50~100℃温度条件下晶化1~5天,离心洗涤得到α-苯膦酸锆;加入去离子水配制α-苯膦酸锆浆液,其固含量为4-8%;将α-苯膦酸锆浆液用旋转式喷雾干燥器进行造粒、干燥,控制α-苯膦酸锆浆液输入雾化器的进料速度为20~80ml/min,控制热风进风口温度为120~200℃;该方法具有操作简单、合成条件温和,对环境污染小等特点,该材料应用于催化、催化剂载体、吸附、离子交换等方面。
-
The primary studying works and characteristics:1 To summarize reinforcing theory of cement mixing pile composite foundation2 To analyze the primary mechanics characters and changing rules of cement mixing pile, based on analysis of test data both indoor and outdoor.3 To discuss siding frictional resistance, ending resistance, ultimate bearing capacity of simple mixing pile and effectiveness factor of grouped piles, loading ratio of soil between piles under cushion cap of grouped piles and stress ratio of pile and soil and so on, and use many computation method and experimentation method to ensure bearing capacity of mixing piles composite foundation.4 To point out and analyze eight sides flaws and problems of the bearing capacity calculation method of mixing pile compositefoundation which ensured by national and normative method/ formula.5 To apply test results of loading tests and a few settlement observation data, use gray theory to predicate ultimate bearing capacity of deep mixing piles, actual example demonstrate engaging between theoretical predicted value and actual value.6 To apply groovy layerwise summation method to discuss entity piles method, double foundation method, equivalent layerwise summation method and consolidation theoretical method and so on, especially by combination of engineering example, use FEM to calculate or discuss the settlement and changing rules of composite foundation.7 To discuss problems of critical length of composite foundation by combination of engineering example and numerical analysis method, and analyze the contrast of critical length between simple pile load and most area load of composite foundation, not only critical length of composite foundation is relative to modulus ratio between piles and soil, but also upside load distribution area of composite foundation.
主要的研究工作与特色为:(1)总结了水泥搅拌桩复合地基的加固原理;(2)在对室内外试验资料进行统计分析的基础上,系统分析了搅拌桩水泥土的主要力学特性及其变化规律;(3)探讨了搅拌单桩的侧摩阻力、端阻力、极限承载力及群桩效率系数、群桩承台下桩间土荷载分担比及桩土应力比等,提出用多种计算方法并结合试验方法来综合确定搅拌桩复合地基的承载力;(4)明确指出和分析了按国家有关规范的方法确定搅拌桩复合地基承载力所存在的八个方面的缺陷与问题;(5)利用过去没有加载至破坏阶段的载荷试验成果和较少的沉降观测数据,尝试了用灰色理论预测深层搅拌桩的极限承载力,实例表明理论预测值与实测值吻合较好;(6)在常规分层总和法的基础上,探讨了复合地基沉降计算的实体墩基法、双层地基法、等效作用分层总和法、固结理论法等,特别是结合工程实例,用有限元数值计算等方法计算和讨论了搅拌桩复合地基的沉降及其变化规律;(7)结合工程实例,用数值分析方法探讨了复合地基临界桩长的问题,指出和分析了单桩荷载下的临界桩长与复合地基大面积荷载下的临界桩长存在很大的差别,复合地基的临界桩长不仅与桩土模量比有关,而且与复合地基上部荷载分布面积有关。
-
Through researching the mechanism of biological nitrification and denitrification and actual project application of the technology and related literature materials, the obtained results are as follows:(1) Anoxybiosis is effective to the removal of COD; after the anoxic process, BOD/COD of the outflow increases, it shows that the degradation ability of wastewater is improved; anoxybiosis is insensitive when shock loading of inflow wastewater varies greatly;(2) It is demonstrated by the operation of inoculation and cultivating that biofilm takes two weeks to succeed in cultivating on packings and the removal ratios of NH3-N and COD get 50% and 70% respectively, when gas-water ratio is 6:1, HRT is 7.3 hour, water temperature is above 15°C;(3) It is demonstrated that gas-water ratio, hydraulic loading, HRT, temperature, pH etc are important factors which influence the removal effect of pollutants, when the gas-water ratio is 6:1, hydraulic loading is about 0.38kgNH3-N/m~3.d, water temperature ranges from 15°C to 27°C, pH ranges from 7.5 to 8.0, the BIOFOR removal effect of pollutants is the best;(4) The operation indicated that, this technology has strong ability of nitrification and denitrification; it has extremely vital significance for reducing the water body eutrophication;(5) It is confirmed the feasibility and the usability of preanoxic-BIOFOR process to treat L-lactic acid production wastewater. The experiment indicated that the treatment effect of this technology is very good and also shows that the technology has many advantages, such as small volume, high treatment efficiency, good effluent quality and strong endurance to load variation, this technology is a new and economical wastewater treatment process.
通过对生物脱氮机理的研究和该组合技术的实际工程应用,并结合有关文献资料,取得如下结论:(1)预缺氧池对L-乳酸生产废水中的COD去除具有一定的效果;废水中难降解的高分子物质经过缺氧工段分解为易于氧化降解的物质,浮状有机物在水解菌的作用下,将不溶性有机物水解为溶解性物质;预缺氧池具有较强的抗冲击负荷能力;(2)BIOFOR接种挂膜过程表明:HRT为7.3h、气水比为6:1、水温保持在15℃以上,经过半个月生物膜即以形成,NH_3-N和COD的去除率分别达到50%和70%左右;(3)研究表明:气水比、水力负荷、HRT、温度、pH等是影响污染物去除效率的重要因素,在气水比为6:1,NH_3-N容积负荷为0.38kgNH_3-N/m~3·d,温度在15℃-27℃,pH在7.5-8.0之间的条件下,BIOFOR对污染物的去除效率达到最佳;(4)运行表明,该组合技术具有较强的脱氮能力,对于减少水体富营养化具有十分重要的意义;(5)经过半年多实际工程的现场调试与运行,验证了利用预缺氧—BIOFOR组合工艺处理L—乳酸生产废水的可行性和实用性,得出该组合技术具有占地面积小,处理效果好,运行费用省,耐冲击负荷能力强等优点,是一项新型、经济的污水处理技术。
-
Electrochemical supercapacitor is a new energy storage equipment and component between batteries and electrostatic capacitors, which has higher energy density than that of electrostatic capacitor, higher power density than that of batteries, long-cycle life and wide-temperature range. It can be applied into many fields such as hybrid electric vehicle, mobile telephone and microcomputer.
电化学超级电容器是一种介于蓄电池和常规电容器之间的新型储能设备及器件,它具有比常规电容器更大的比能量、比蓄电池更大的比功率、长循环使用寿命长和使用温度范围宽等特点,它在混合电动汽车、移动电话、微机等众多领域内有广泛应用前景。
- 推荐网络例句
-
According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。
-
The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。
-
When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候,老师解释《圣经》用两种不同的方法。