The threshold stress and fracture stress of hydrogen-induced cracking of X80 pipeline steel are studied by constant load test and slow stain rate test.
采用恒载荷和慢应变速率动态拉伸实验方法，测定了X80管道钢在不同充氢条件下的氢致开裂门槛应力和断裂应力。
For more than a century researchers have known the basics of how limestone caves form: a tiny fracture opens in the rock perhaps due to some internal stress and water begins percolating through it.
超过一个世纪以来，研究者就懂得石灰岩洞形成的基本原理：可能由于内部的压力，石头上出现了微小的裂缝，然后水开始渗透。
For more than a century, researchers have known the basics of how limestone caves form: a tiny fracture opens in the rock, perhaps due to some internal stress, and water begins percolating through it.
超过一个世纪以来，研究者就懂得石灰岩洞形成的基本原理：可能由于内部的压力，石头上出现了微小的裂缝，然后水开始渗透。
But he suffered a stress fracture in February and started playing again only in mid-July.
但是二月份他严重骨折，七月中旬才重新开始打球。
Whatever you do, do not try to run through the pain. You will only make your injury worse and could wind up with a stress fracture.
不过你做什么，都不要在还在疼的时候跑步，这样只会让你更糟，也许会惹上疲劳骨折。
The results of fracture prediction would be affected by geologic model, geometric framework model, rock mechanics properties and regional stress background.
裂缝预测结果受地质模型、几何框架模型、岩石的力学性质和区域背景应力的影响。
The elastic range, the plastic range (during which the material flows at a constant stress), the strain-hardening range, and the range during which necking occurs, terminating in fracture.
弹性范围，塑料范围（当材料以不变的应力流动时），应变硬化范围和发生颈缩现象以其断裂终止的范围。
Under the action of tensile stress and tensile stress, the bolt with relatively low strength will crack first, and then the fatigue fracture will occur.
在拉应力和应拉力交替的作用下，强度相对较低的螺栓会先产生裂纹，进而发生疲劳断裂。
So shifting to a forefoot running style, as people do when running barefoot, may lessen your risk for a stress fracture, and up your chances of developing a muscle strain or tendinitis.
这样，虽然当一个人赤脚跑步时已经改变成了前脚掌跑步的姿势，会一定程度减轻骨折的危险，但是会相应的增加肌肉拉伤或者肌腱炎的几率。
The fracture growth level is strictly controlled by argilla content, structural stress action and fault.
裂缝发育程度严格受泥质含量、构造应力作用和断层的控制。
Numerical simulation of recent structural stress field, prediction principle of fracture effectiveness and performing method are discussed.
论述了现今构造应力场数值模拟及裂缝有效性预测的原理及实现方法。
In this paper, fracture mechanism, position and direction of crack initiation of mixed mode fracture in several ductile materials are tested, and stress distributions of which are analyzed.
应用传统强度理论和细观力学方法对几种韧性材料在复合载荷条件下的断裂机理、启裂位置、开裂方向进行了实验分析和应力场计算。
The paper discusses over the influence exerted by welding residual stress on the static strength, brittle fracture and stress-corrosion cracking of metal structure.
本文介绍了焊接残余应力对金属结构的静强度、脆性断裂以及应力腐蚀开裂的影响。
Dimensions of the stress and crystalline have influence on cleavage fracture.
应力的大小和晶粒的尺寸影响解理断裂。
Yao Ming has been troubled by his foot injury, and has not played on the court since his third foot stress fracture in his left foot last year.
姚明长期深受脚伤之苦，自从去年左脚第三度应力性骨折后，便未曾再上场打球。
Based on testing results, the relationship between velocity of granite subcritical crack growth and stress intensity factor, and the fracture toughness are obtained respectively.
根据试验结果，得到了花岗岩亚临界裂纹扩展速度与应力强度因子之间的关系和花岗岩的断裂韧度。
According to the failure style of the air valve of industrial compressor, the fracture and static stress are analyzed.
针对工艺用压缩机气阀的失效形式，对损坏的阀片进行了断口及静态应力分析。
Total knee arthroplasty for knee arthritis in the presence of tibiofibular stress fractures restores limb alignment and facilitates fracture healing with excellent functional outcome.
全膝关节置换对于有胫腓骨应力性骨折的关节炎患者有恢复其下肢对线和促进骨折愈合的良好疗效。
The mechanism of the shat-blast enhancing technology and its eldest on improving resisfemle to fatigue and stress corrosion fracture are describe briefly in this paper.
本文简要介绍喷丸强化工艺的机理，及在改善金属零部件疲劳断裂和应力腐蚀断裂抗力中的强化效果；
According to the relation of fracture toughness and stress intensity factor, the cracking similarity condition of induced joint in structural model is established.
根据断裂韧度和应力强度因子的关系，建立了结构模型中诱导缝的开裂相似条件。
Meterials and methods: gathered 14 cases full material of stress fibula fracture, Analysed their X - ray signs and special X - ray expression of bone tumour, and discussed diagnose of the disease.
材料与方法：收集资料完整的胖骨应力性骨折14例，对它们的X线征象及创伤性骨肿瘤样特殊X钱表现做了回顾性分析。
The design mainly involves the analysis of the stress, fatigue, thermal ratchet and fracture mechanics, the analysis of flow-induced vibration of the internals and the test verification.
主要涉及的内容包含每个设备部件的应力、疲劳、热棘轮、断裂力学分析和内部构件流致振动分析以及试验验证等。
We present a male patient with straddle-type pelvic stress fracture and discuss the possible causative mechanisms.
本文报告一例男性跨立式骨盆应力性骨折并探讨其可能生成机转。
The predicted fracture stress matrix cracking stress and crack spacing just have error less than 20% with the corresponding experimental value.
预测的断裂应力、基体开裂应力和裂纹间距与实测值最大误差在20%以内。
The stress corrosion cracking sensitivity of the steel was low, and the fractography of its stress corrosion cracking showed transgranular and quasi-cleavage fracture with secondary cracks.
研究表明该钢具有较好的抗应力腐蚀性能，其应力腐蚀断裂形貌为穿晶、解理断裂，并有二次裂纹。
In the case of the limited level density of the material surface energy, the fracture stress and the calculation formula of the engineering damage were studied.
本文研究考虑损伤时材料的断裂应力，推导出了在表面能密度有限的情况下，损伤断裂应力的计算公式。
A test program is established to evaluate the stress sensitivity and fracture lag-effect of fractured reservoir, and the qualified indexes are proposed thereby.
建立了一套裂缝性油藏应力敏感性和裂缝滞后效应评价实验程序，提出了评价应力敏感性和裂缝滞后效应的量化指标。
A test program is established to evaluate the stress sensitivity and fracture lag-effect of fractured reservoir, and the qualified indexes are proposed thereby.
建立了一套裂缝性油藏应力敏感性和裂缝滞后效应评价实验程序，提出了评价应力敏感性和裂缝滞后效应的量化指标。
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