对失效铝合金管进行了宏观形貌观察、材质检验、 断口微观形貌观察及应力分析。
The failure reason of the aluminum alloy tube was investigated by macroscopic and microcosmic appearance observement, quality of material test, the stress analysis.
利用扫描电镜对失效压铸模具热疲劳裂纹的宏观、微观、断口形貌进行了分析。
The macro-morphology, micro-morphology and fracture morphlogy of failure die casting dies were analyzed.
通过对管线钢不同温度的落锤撕裂试验和微观断口分析，研究了DWTT试样断口的分层裂纹及其对断裂的影响。
The delamination crack and its effect on the fracture of pipeline steel were investigated by drop-weight tear test(DWTT)at different temperature and micrograph analysis.
微观分析表明，疲劳断口上韧窝的增大增深、疲劳源数量增加等是疲劳寿命增加的主要原因。
The main reason for the fatigue life enhancement is correlated with the enlarged dimples and more fatigue sources on the fracture surface.
采用光学显微镜、扫描电镜对失效铁路车辆铆钉的微观组织与断口进行分析。
The microstructure and tensile fracture of railway vehicle rivet were analyzed by OM and SEM.
并结合断口分析，探讨了钨合金在冲击作用下发生断裂的微观特征与韧脆转化间的关系及其物理本质。
Microscopic features of dynamic fracture of tungsten alloys under shock loading, as well as their relationship with the ductility_brittleness transition were discussed.
采用化学成分分析、力学性能测定、金相检验以及断口宏、微观分析等方法，对钻井泵齿轮轴断齿进行了分析。
Fracture tooth of gear shaft in well drilling pump was analysed by chemical analysis, mechanical testing metallographic examination macro and microfractography.
分析了接头微观组织结构，元素的扩散及断口形貌。
The microstructure, element diffusion and appearance of joint were analysed.
从材料成分、微观组织、断口形貌以及腐蚀产物等角度，分析了不锈钢再沸器开裂失效的原因。
The causes of the cracking and invalidation of stainless steel reboiler were analyzed in terms of ingredients of the material, microstructure, appearance of the breakpoints and the crud of corrosion.
通过受力分析、宏观断口分析和微观分析表明，零件的设计和化学成分符合要求；
Through mechanic analysis, macrofractgraphic analysis and microscopic analysis, it shows that the design of the component and chemical composition meet the requirements.
试样的微观断口分析显示了在高温应变疲劳试验中同时存在疲劳、蠕变和氧化损伤。
The results show that fatigue, creep and oxidation damage always develops simultaneously during low cycle fatigue at high temperature.
对回收的样品进行了断口分析和金相分析，从宏微观角度分析了无钴合金在不同应变率下的断裂机制。
By the fracture analysis and metallographic analysis, we obtained the spall fracture mechanism at different strain rate.
对微细高速钢麻花钻破坏断口进行了显微观察和测量，根据微小孔钻削实验结果，分析了造成钻头折断的原因和影响其使用寿命的因素。
The fault plane of micro-drill is measured with microscope. According to the result of test, the main elements of destroying drill is investigated.
本文对珠光体球铁常温下小能量多次冲击断口进行了宏观和微观的分析；提供了一组珠光体球铁小能多冲断口微观形貌的电子显微镜照片；
This paper presents the macro and micro analysis of pearlite ductile iron small energy multiimpact fracture surface a group of it's microscope photographs are supplied.
对拉西瓦花岗岩在各种受力情况下岩石破坏断口，进行了微观扫描电镜试验研究，分析了岩石微观破坏形貌特征和微观破坏力学机制。
For Laxiwa granite failure surface under various stress states, the microtest has been carried out to study the microfailure character and its mechanism.
通过断口的微观扫描及夹杂物定性分析发现，断口未出现脆性断裂的特征以及夹杂物分析未发现有氮化物和碳氮化物存在。
The microscopic scanning of the fracture shows that the fracture is not a brittle one, and the qualitative analysis of the inclusions points to the absence of nitrides and carbonitrides in the incl...
本文对断轴进行了宏观断口检查并对化学成分、力学性能、高低倍组织及微观断口进行了分析。
In this paper, the fracture surface of a failed axle was examined macroscopically. The chemical composition, mechanical properties, ma-cro-and microstructure of the fracture surface were analysed.
通过金相分析、微区成份分析、宏观和微观断口分析，主要研究钎焊层和焊鏠区的微观结构及其对复合钢管工艺性能和使用性能的影响。
A study was carried out on the microstructure of interface and welding seam in dual-metal clad steel pipe. And its inferences on technological and service properties were studied.
对剃齿刀断口进行了宏、微观检验、化学成分分析、硬度测试和非金属夹杂物及显微组织检验。
Micro-analysis of the Internal Control Performance System of Capital Operation of State-owned Commercial Banks Based on Data Validation;
对剃齿刀断口进行了宏、微观检验、化学成分分析、硬度测试和非金属夹杂物及显微组织检验。
Micro-analysis of the Internal Control Performance System of Capital Operation of State-owned Commercial Banks Based on Data Validation;
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