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The mechanical properties of coal filled polymer composites The mechanical properties of coal/PP composites were investigated, and the effects of coal rank, particle size, surface modification of coupling and alkylation were discussed. The results show that the anthracite and bituminous coal all can be used as filler of plastic after pretreatment of part devolatilization and surface modification; The modulus of composites increase with the content of coal filler; The coupling agent is of no effect for reinforcing the coal/PP composites, except that there are new oxygenous function group forming on the surface in the process of pulverizing; The F-C alkylation reinforce coal (under 10μm)/PP composites obviously.

4煤填充高分子复合材料力学性能超细煤粉填充聚丙烯复合材料力学性能的研究结果表明，烟煤和无烟煤经过脱除部分挥发分的预处理后，都可用于与塑料共混制备复合材料；偶联剂改性对低变质程度烟煤/聚丙烯复合材料的力学性能基本不起改善作用，而对于经气流超细粉碎后的小粒径高变质程度烟煤及无烟煤则有一定的增强作用；烷基化改性在煤表面接枝了烷基，使平均粒径小于10μm的煤/聚丙烯复合材料拉伸屈服强度普遍提高，煤填充高分子复合材料可在较高含煤量情况下维持良好的力学性能。

In 1959 Sauerbrey developed an empirical equation to describe the mass sensitivity of gas phase mass deposition on a piezoelectric quartz crystal——Sauerbrey equation:ΔF=〓=-CΔm, where ΔF is measured frequency shift, in Hz; F〓 is the fundamental resonant frequency, in Hz;Δm is mass change, in g; A is piezoelectrically active area , in cm〓;μ〓 is shear modulus of quartz, 2. 947×10〓g· cm〓;ρ〓 is density of quartz, 2. 648g·cm〓; C is mass sensitivity constant , in 〓.

1959年，Sauerbrey最先提出了将压电晶体谐振器用作定量测量质量的装置，并从理论上导出了频率与质量变化之间的关系式——Sauerbrey方程：ΔF=〓=-。。。

These tests show that: 1. suction decreases with the increase of the water saturation in the chalk; 2. stress variants proposed are available for describing the stress state of the unsaturated chalk; 3. preconsolidation pressure increases with suction, while the effects of suction on the compressibility coefficients λ and κ are not evident; 4. as usual unsaturated soils, the permeability to oil of chalk increases with the suction; 5. yield strength of the chalk behaves with volumetric strain hardening; 6. cohesive behaviour of the chalk is related to the stress level, and relation between time-dependent deformation and logt is linear; 7. cohesion of the chalk decreases with the increase of the suction, while the elastic stiffness and the cohesion coefficient increase; 8. strength and elastic modulus increase with the strain rate, while the strain at the peak strength decreases with the increase of the strain rate.

试验结果表明，白垩中的虹吸力随水饱和度的降低而提高；吸力、水饱和度和强度的变化过程均与时间有关；可用由理论分析得到的应力状态变量描述非饱和白垩的平衡状态；前期固结压力随吸力增加而提高，而压缩指数λ与κ则同吸力无关；应力大于前期固结压力时，粘性变形与时间的对数关系曲线呈线性关系，其大小和增长速率均随吸力减小而增大，可视为白垩弹性刚度降低和粘性系数增大的结果；前期固结压力和变形模量随着应变速率的提高而提高，压缩指数κ和λ则随应变速率的提高而减小；应变速率较低时，粘性和吸力对前期固结压力及压缩指数的影响较小；白垩中油的渗透性随着吸力增加而提高；白垩在屈服阶段具有明显的体积应变硬化特性。

We can get the inductance difference between A and B in equation (3):The result that a group of sensors A and B do the differential is to prorate with the place change at the balance place. The proportion modulus is k.

我们能拿那感应系数不同在一之间和相等(3)的 B：结果一群感应器一和 B 做两路线的运费差额是在平衡地方以地方比例分配转乘。

Because the unloading modulus in the modified model isn't defined renewedly, it only fits the case of persisting loading well.

因为该模型没有对卸载模量重新定义，所以该模型较适合于持续加载的情况。

The first step is reviewing conventional methods of digital beam forming, including WINER method, Steepest-Descent method, LMS, RLS etc. Then , recent digital beam forming methods in the DS-CDMA mobile telecommunications systems are studied, including the algorithm based on least-squares despread respread Multi-Target array, least-squares Despread Respread Multi-Target Constant Modulus Array , Pilot bit LMS-DRMTA algorithm etc.

本文首先简介传统的DBF算法，包括维纳算法、最陡下降算法、最小均方算法、递归最小二乘算法等；然后介绍基于DS-CDMA移动通信系统的DBF算法，包括LS-DRMTA、LS-DRMTCMA导频LMS-DRMTA算法等；最后给出各种算法的仿真结果及分析。

Under triaxial compressive conditions, with an increase of loading, the propagation and sliding of microcracks in rocklike materials become increasingly intense and lead to a serial of consequences, such as nonlinear stress-strain relationships, deterioration of elastic modulus, anisotropic deformation, volumetric dilatancy and irreversible plastic strain, etc..

三维压缩条件下，随着载荷的逐渐增加，岩石类材料内部微裂纹的传播与错动不断加剧，最终导致非线性应力－应变关系、弹性模量的减小、变形的各向异性、体积膨胀以及不可逆塑性变形等结果。

The PP/EP was prepared by means of dynamically cured with epoxy, solidifier and compatibilizer PP-g-MAH. The compatibility, the mechanical properties and the crystalline state of the PP /EP composite were investigated. The results showed that the PP/EP system was incompatible polymer blends; the addition of PP-g-MAH has greatly effect on the rigidness and modulus of PP/EP.

在聚丙烯基体中加入环氧树脂、固化剂、马来酸酐接枝聚丙烯，通过动态固化制备了PP/EP复合材料，并对其相容性、力学性能、结晶性能等进行了研究。

The convergence rate and stational error of the proposed algorithm are compared with those of other constant modulus algorithms by computer simulation.

在最后的数据仿真中，与基本CMA等算法在收敛速率、稳态误差等方面进行了对比分析，验证了新算法的有效性。

To guarantee high quality,BRIGHTWAY has brought in a large batch of the latest advanced equipment from around the world such as omnipotent material tester,M/I index tester,heat deflection temperature tester,RoHS test equipment,aging property tester etc.All of the production processes are under strict control and supervision ofour experienced enginners. Density,flow index,hardness,tensile-strength,tensile stetch, bending strength, flexural modulus,impact strenght, mould shrinkage factor, heat deflection temperature, fibre glass contents, water absorption, combustibility will be tested strictly by the professional engineers.

为了确保产品的高品质，百莱威引进了大量国际新一代的先进设备，如万能材料试验机、M/I指数测定仪、热变形温度测定仪、RoHs检测设备、耐老化试验设备等等，并且所有的生产过程都受到了严格的质量控制，由经验丰富的专业工程师进行了密度、流动指数、硬度、拉伸强度、伸长率、弯曲强度、冲击强度、模收缩率、热变形温度、玻纤含量、吸水率、燃烧性能等十多项苛刻的评审和检测。

Now she was hungry and angry.She began to smoulder.

现在她又饿又气，她开始流露难以抑制的怒火。

You have placed our iniquities before You, Our secret sins in the light of Your presence.

诗90：8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。