力学

The results show that the mechanical properties of EVA/MH composites are improved by use of MCA, such as toughness, breaking strength and yield strength.

结果表明：MCA能够改善体系的力学性能，在提高韧性的同时，屈服强度和断裂强度也有所提高。

From the results of ultimate stress, breaking energy and relaxation, there were no significant differences between transverse and longitudinal direction.

同时在考虑角膜外形和焦距对视网膜的作用时，特别是经过放射状角膜切开术后，角膜的力学特性将是重要的研究课题。

It was found that the breaking stress decreased with decrease of molecular weight and degree of macromolecular orientation.

研究结果表明，本文工艺条件下研制的PDS缝线在体外降解过程中随着分子量和大分子取向程度下降，力学性能明显下降，4星期时强度基本消失。

RESULTS: SEM results showed that the fiber morphology of P(50/50) 6% nanofibers membrance was better and more uniform diameter distribution. Mechanic test indicated nanofibers membrance of P(50/50) had longer breaking elongation but smaller breaking stress than nanofibers membrance of P(75/25). Hydrophilicity of P(75/25) fibers was better. MTT results proved that 6% and 8% P(50/50) nanofibers could enhance the adhesion and proliferation of endothelial cells on the surface of materials, and the cells had the best spreading and attachment on the nanofibers.

结果：通过扫描电镜观察发现由质量分数为6%聚(50/50)制备的纤维膜具有更好的纤维形态，且直径分布均匀；拉伸力学测试显示由聚(50/50)制备的纤维膜比聚(75/25)具有更高的断裂伸长率，但断裂应力较低；细胞生物相容性实验表明猪髋动脉内皮细胞在质量分数为6%和8%聚(50/50)的纳米纤维膜上更能有效的黏附与增殖。

The internal breaking, the stress transmission process, the quality variation with the change of the transformation structure features and the continuous expansion of the work-doing resulted from the weak stress of the pulsation action lower than the fatigue limit.

发现变形砾石内部存在特殊的微裂隙组构，呈现出错裂-横裂-劈裂-爆裂-复裂-应力矿物等的复杂组合，其结构面特征反映出显微构造形迹的力学性质是互为转变的。

It was shown that the water content obviously affect the mechanical properties of Gypsum Breccia. The peak stress and Young's modulus decreased exponentially, while the poisson ratio increased linearly with the increase of the water content in the natural situation.

研究表明：含水率的不同对岩石的峰值强度、弹性模量和泊松比等力学性质有显著影响，随着含水率的增加，膏溶角砾岩的峰值强度和弹性模量呈指数减少，而泊松比呈线性增大。

And so in law, in architecture, in electricity, in bridge-building, in all mechanic arts and technical sciences, our effort must be for the most scientific instruction, the broadest basis of training that will enable men and women students to attain the highest possible proficiency in their chosen profession.

因此，在法律、建筑、电力、以及所有力学艺术、技术学科里，我们都必须致力于提供最科学的教育，最广泛的训练，使男女学生都能在自己选择的职业中发挥出最高水平。

It is shown that the distribution of mechanics variables solved by using the Toroidal Coordinate is more accurate than that by Bridgman analysis.

通过比较发现，采用圆环坐标求解的力学量的分布，较Bridgman解更为准确，可以体现出最小横截面上位移和应变的非线性。

The relationship between run-up and take-off in broad jump is analysed through thesimple principles of mechanies.

通过简单的力学原理，分析了跳远中助跑与踏跳的相互关系，论证了只有将二者有机地结合起来，才能取得优异成绩。

This article analyses changing of length of the last two steps in run up and its effect on the result of broad jump biodynamically,thus determining the proper range of changing the last two steps in broad jump.

借助资料文献，对跳远最后两步的技术进行生物力学的分析，并讨论了最后两步步长变化的大小对成绩的影响，从而找出助跑最后两步步长变化的合理范围，为教学训练提供理论依据。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。