查询词典 fracture

ABSTRACT In this thesis, the microstructure, the in situ tensile fracture processes and the mechanism of deformation and fracture of the SiC whisker reinforced aluminium composites made by a squeeze casting method were studied by means of SEM, TEM, HVEM, AES, HREM, electronic tensile machine and magnetic tape recorder. The dislocation theory and the complex function method were also used during analysis.

本文利用扫描电镜、透射电镜、高压电镜、俄歇谱仪、高分辨电镜、电子拉伸机和磁带式记录仪等设备和技术以及位错理论和复变函数方法研究了由高压凝固铸造法制备的碳化硅晶须增强铝复合材料的显微组织、动态拉伸断裂过程以及在特殊条件下变形和断裂的规律。

In the same time, according to the fracture test results, the influence mechanism of aggregate size on fracture toughness of adherence of new and old concrete is discussed and analyzed, which is verified by manse of the fractal theory.

同时根据新老混凝土粘结断裂试验结果，分析了粗骨料最大粒径对新老混凝土粘结断裂韧度的影响机理，并用分形理论对影响机理进行了验证。

Types IV, V, and VI fractures have in common a fracture line which extends medially into the scapular body. These fracture patterns present unique challenges for surgical approaches and reduction and fixation strategies.

IV， V和 VI肩胛盂骨折的共同特征是其骨折线延伸到肩胛体，这种骨折的入路以及复位和固定方法的选择对于骨科医生是一种挑战。

Objective To find out an effective approach to treat fracture of metacarpal bone and phalanges,especially near the joint fracture.

目的 寻求掌指骨骨折，特别是关节附近掌指骨骨折更为简便、有效的牵引和固定方法。

Based on the macro and micro fracture characteristics of the transmission shaft fracture surface and the metallogenetic structures, mechanical properties, hardness and chemical compositions, the failure reasons of the main transmission shaft were studied.

在传动轴断口宏微观特徵观察的基础上，综合主传动轴的金相组织、力学性能、硬度以及化学成分等，对主传动轴断裂失效的原因进行研究。

As a branch of quantitative metallography analysis, quantitative fracture surface analysis, an important part of the fracture surface analysis, is developing well and laying store by more and more scholars.

定量断口分析作为定量金相分析的一个分支，是断口分析领域中一个不可缺少的组成部分，近些年来得到广泛的重视和发展。

Methods: twenty rabbits with fracture of the femur diaphysis were treated by intramedullary nailing of femur with composites rod of resorbable dl polylactic acid calcium metaphosphate. the animals were sacrificed at 2, 4, 8 and 12 weeks after surgery. the fracture healing, the material degradation and mechanical properties were studied with x ray films, macroscopic, microscopic and electron microscopic observations.

用生物可吸收性聚乳酸/偏磷酸钙复合物棒对20只兔股骨髁上实验性骨折行髓内固定，术后2， 4， 8和12 wk分别经x线摄片、肉眼、光镜和电镜对骨折的愈合、材料的降解性能和力学性能进行观察。

With the fracture profile method, the dimensions of fractal of the fracture surface of rock was measured.

用侧面轮廓线法测量了岩石断口的分形维数，结果表明，岩石的断裂韧度越大，断口分维数越小。

Metallographic analysis, analysis for fracture surface of scanning electron microcopy photographs, electron-probe analysis,X-ray powder diffraction analysis, transmission electron microscope analysis have been done for the analysis of microstructurs、fracture apperance、structure,and has carried on the preliminary discussion to the toughening Mechanisms.

采用金相分析、扫描断口分析、能谱分析、x射线粉末衍射结构分析、透射电镜分析对合金化以及引入韧性第二相后的TiFe_2合金的显微组织、断口形貌、微观结构进行了分析，并对合金的韧化机制进行了初步的探讨。

One microgram of aFGF was injected into the fracture site between the first and the ninth day after fracture either every other day or every day.

aFGF的一microgram被注射进骨折站点在之间第一并且在骨折以后的第9天每隔一天或每天。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。