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- Fatigue Fracture of Tibia in School Age Children. 学龄期儿童胫骨疲劳性骨折
- Microdamage accumulation will finally lead to bone fatigue fracture. 显微损伤的积累最终会导致骨的疲劳骨折。
- If the injury is not cured in time or is cured unsuitably, it will lead to periosteum hyperplasia or incurable fatigue fracture. 如果不及时治疗或治疗不当,会引起骨膜增生,甚至会引起疲劳性应力性骨折。
- The fatigue fracture surface of test specimens shows hybrid-fracture characteristics of quasi-cleavage and dimple. 合金中添加Ce后,疲劳裂纹扩展区出现疲劳条纹,疲劳断口呈现出准解理和韧窝断裂的混合特征。
- The relationship between surface integrity (SI) of metal materials and fatigue fracture resistance(FFR) are discussed. 论述了金属材料/零件的表面完整性与其疲劳断裂抗力之间的关系。
- Surgical implants are subject to repeated stresses in use,which can result in fatigue fracture. 使用过程中的反复应力会导致外科植入装置发生疲劳断裂。
- Objective To discuss the advantages of DR in fatigue fracture diagnosis compared with the plain X-ray photography. 摘要目的:探讨DR在疲劳骨折诊断中,与普通X线摄影相比有哪些优势。
- The results showed that two shafts' fracture are both high-low cycle fatigue fracture caused by vibratory fatigue. 结果表明,两根轴的断裂均是以振动疲劳为主的高、低周复合疲劳断裂。
- Fractography analyses with scanning electronic microscopy (SEM) were conducted to determine fatigue fracture mechanisms of these two lead-free solders. 此外,亦利用扫描式电子显微镜(SEM)观察表面裂缝与疲劳破断面,以了解此两款无铅焊锡之疲劳破裂机制。
- It can decrease the strength of the bone-prosthetic and the incidence of the occurrence of fatigue fracture and the loosening of prosthetic. [结论]旋转铰链型假体减少了骨与假体之间的应力,大大降低了松动或疲劳折断的发生率,是膝部恶性骨肿瘤较理想的保肢方法。
- The fatigue fracture characteristics were fatigue striation, ductile microvoid, and quasi-cleavage-like fracture characteristic. 疲劳断裂特征为疲劳条纹、韧窝及类似准解理状形貌特征。
- In this paper,the fractal properties and entropy properties of the low-cycle fatigue fracture of Zircaloy-4 are primarily investigated. 对锆-4合金低周疲劳裂纹扩展过程分形特征和熵特征进行了初步的研究。
- Fatigue fracture is the main form of failure of the crankshaft of spheroidal graphite cast iron in 195 model diesel engine. 195型柴油机球墨铸铁曲轴的失效形式,主要是疲劳断裂。
- Torsional pro-perty and rotary fatigue fracture of Smart nickel-titanium en-dodontic instruments[J].J Pract Stomatol, 2005, 21(2):217-220. Smart镍钛根管器械的扭转性能与旋转疲劳断裂行为研究[J].;实用口腔医学杂志;2005;21(2):217-220
- Objective To study the reasons of student fatigued fracture. 目的探讨中学生胫骨疲劳和疲劳骨折的发病机理。
- New investigations of wash out and dissolve erode of the base are come out, and a quantitative analysis method of water fatigue fracture of concrete pavement is given. 提出基层冲刷、溶蚀及混凝土路面水疲劳破坏机理,对混凝土路面的水破坏进行定量分析。
- The results indicate that the fatigue fracture in early stage on the coupler was caused by lower silicon content, worse mechanical property and improper mechanical processing. 结果表明,由于联轴节硅含量太低、力学性能不好、机加工不当,导致联轴节早期疲劳断裂。
- Cowrie pattern area is smaller than fast fracture area. Micromorphology shows that the fatigue striation is the main pattern. So it is the early fatigue fracture. 结果表明,断口宏观上有明显的贝纹线花样,贝纹区面积较小,而瞬断区面积很大,其微观形态主要为疲劳辉纹,因此泵轴的断裂属早期疲劳断裂。
- When the denture is token off and worn, in masticatory process the clasp is loaded with a low-frequency circle loading which will lead the clasp to the fatigue fracture. 早在19世纪中叶人们就发现金属存在疲劳断裂现象。 任何运动机械都难以避免疲劳的发生,整铸支架式可摘局部义齿在使用过程中,卡环随义齿摘戴及咀嚼过程中受到一个低频率的交变载荷,当达到卡环的疲劳寿命时,卡环会出现疲劳失效,甚至断裂。
- The auth-ors conclude that spondylolysis is mainly the fatigue fracture due to locally increased stress and is contribut-ing most by backward extension of lumbar spine. 作者认为,椎弓峡部裂实质上主要是由局部应力增高而引起的疲劳骨折,而腰椎后伸与其关系最为密切。
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries