力学

The microstructure, mechanical properties and hardness of Mg-2% Mn-x%Y alloy were analyzed by optical microscope, mechanical apparatus and sclerometer.

用光学显微镜、力学万能试验机和显微硬度仪等分析了Mg-2% Mn-x% Y合金的显微组织和力学性能。

Analyze the failure models of rock slope, and then classify the sliding plane, the sliding plane can be divided into self-born sliding plane, appendiculate sliding plane and mixed sliding plane, furtherly summarize the selection method of mechanics parameters to each types. Based on the classification, the author establishes the mechanics model of each sliding plane.

论文主要研究内容和结论如下：(1)阐明了边坡滑动面力学参数取值的研究对象、重点及其研究意义，简要回顾了滑动面分类、结构面强度取值、滑动面试验强度取值和力学参数反算的研究现状，针对目前研究中存在的一些问题，提出了本文的主要研究内容。

Analyze the failure models of rock slope, and then classify the sliding plane, the sliding plane can be divided into self-born sliding plane, appendiculate sliding plane and mixed sliding plane, furtherly summarize the selection method of mechanics parameters to each types. Based on the classification, the author establishes the mechanics model of each sliding plane. Discuss the influence of water and weathering and sedimentation conditions on rock slope, and then specify the geological cause of rock bedding slope, counter-tilt rock slope and cracked rock slope.

2分析了岩质边坡的几种主要破坏模式，在此基础上对岩质边坡滑动带进行分类研究，从大的方面主要分为自生型滑动面、依附型滑动面和混合型滑动面三类，总结与各类滑动面相适应的力学参数取值方法，从而建立岩质边坡滑动面的力学分析模型，讨论水、风化和沉积环境对岩质边坡的影响，归纳了顺层岩质边坡、反倾岩质边坡和破碎岩质边坡滑动面的成因。

On the basis of analyzing forces on the self-supported column,the superposition method in mechanics of material was used to calculate the steady deflection at top of the high column under both of weight and distributed wind pressure.

在对自支承式塔设备建立合理的力学模型并进行受力分析的基础上，采用材料力学中的叠加法，计算了高塔设备在均布风载荷、自重联合作用下的塔顶静挠度，提出对于自重和长细比均较大的高塔，塔体自重对塔顶挠度的影响不可忽视，并推导出了计算这种影响的表达式。

On the basis of analyzing forces on the self-supported column, the superposition method in mechanics of material was used to calculate the steady deflection at top of the high column under both of weight and distributed wind pressure. The results show that the effect of weight to top deflection of the heavy weight high column can not be ignored and a formulation is deduced to express this effect.

在对自支承式塔设备建立合理的力学模型并进行受力分析的基础上，采用材料力学中的叠加法，计算了高塔设备在均布风载荷、自重联合作用下的塔顶静挠度，提出对于自重和长细比均较大的高塔，塔体自重对塔顶挠度的影响不可忽视，并推导出了计算这种影响的表达式。

With reading a mass of the documents about the rolling resistance and wet anti-grapping, there are 11 types semisteel belt tyres formularies designed in this paper by changing carbon black and SBR1502/SBR1712/BR9000 blending ratio, which answer for the actual demands of the tyre industry and have a certain extent engineering practicability.The DMA curves of 11 types tread rubber materials used in tires with the changes of temperature have been obtained by using Dynamic Mechanics Analysis technique on NETZSCH DMA242 instrument.

本文采用动态力学分析法，使用NEZSCH公司生产的DMA242型实验仪，获得了11种胎面胶的DMA温度曲线，从炭黑和生胶配比变化两方面，分组对不同系列的胎面胶的储能模量—温度曲线和损耗因子—温度曲线进行了分析比较，并参照1#胶料，对11种胎面胶—10℃～10℃和50℃～80℃的tanδ进行比较，讨论了炭黑及SBR1502/SBR1712/BR9000并用比的改变对胎面胶滚动阻力、湿抓着力的影响；在动态力学分析实验的基础上，还获得了11种胎面胶的生热率曲线，并分组进行了比较，研究了配方与生热率的关系。

Summarizing results show that study on the experiments and simulation of mechanical behaviors of carbon nanotubes is testing and simulating about its parameters, such as Young's modulus, shearing strength and tensile strength, the advantage...

综述结果表明：碳纳米管力学行为的试验与仿真研究主要表现在采用不同的试验方法与势函数对其弹性模量、抗剪强度、抗拉强度等参数进行测试与计算仿真，分析了这些方法用于研究碳纳米管力学行为的优缺点。

The results show that the amorphous PLGA fiber with porous structure (0.1-1.0 μm) is obtained by diluted solvent spinning method and the mechanical properties is affected by pressure and temperature. Bending strength and shearing strength of the samples increase firstly and then decrease with the increase of molding temperature and pressure. While the molding temperature is 160℃and the pressure is 105MPa, the PLGA materials possess optimal mechanical properties, bending strength, shearing strength and bending modulus 187.3 MPa, 100.0 MPa and 2.5 GPa, respectively. The mild temperature molding PLGA materials are desired to play a grate role in non-bearing internal fixation devices.

研究结果表明：非晶多孔结构的PLGA纤维可通过溶液沉析纺丝的方法获得，其孔径为0.1~1.0μm；压制压力和压制温度对材料的力学性能影响较大，材料的抗弯强度、剪切强度和抗弯模量均随着温度和压力的增大而先增大后降低；在压制压力为105MPa，压制温度为160℃时，试样的力学性能比较理想，此时，其抗弯强度可达到187.3MPa，剪切强度达到100.1MPa，抗弯模量达到2.5GPa，可望作为非承重部位骨折愈合内固定材料。

Be an apparatus's turn to be OK to fight against shearing force , curved strain , axle centre strain and torque force produced by thigh-bone neck fracture only with one nail, the biomechanics the Shanghai University biomechanics project research institute has been carried out for this purpose tests , the various index inner without exception better than now having at present fixes an apparatus.

该器械仅用一根钉即可抵抗股骨颈骨折所产生的剪力、弯应力、轴心应力和扭力，上海大学生物力学工程研究所为此进行了生物力学测试，各项指标均优于目前现有的内固定器械。

In the solution of the singular integral equation, the influence at the center crack caused by the many remote cracks is considered approximately.

在此材料的力学分析中，平衡方程和几何方程和均质弹性力学中的相应方程全同。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。