测试发现热暴露在一定程度上降低了原抛光试样表面的残余压应力水平。
Compared with the polished specimens, the surface residual stress of the post-exposed specimens was also compressive, but much lower.
对于敏感性材料，在低应力水平下也会发生断裂，危险性很大，容易引发承压管道和设备的爆破，造成重大事故。
Sensitive materials under low stress will suffer breakage which brings about large risk explosion of pressure bearing pipe and equipment is easily to be triggered causing major accident.
方解石变形双晶、压溶缝合线等显微构造分析结果，一致表明区内引起变形的主应力近于水平。
Analysis of the twinning of calcite, and the stylolites shows that the principal stresses are nearly horizontal.
在连轧最后的水平辊出口带立辊轧制可使此压应力增加。
The compressive stress can be increased in the case of continuous rolling with vertical edging rolls at the exit of last horizontal rollers.
针对低应力水平下钙质砂的颗粒破碎现象具有特殊性，分析了围压对钙质土颗粒破碎的影响，揭示其变形过程的力学机制；
Granule failure of calcareous sand is very special at low stress level. The effect of confining pressure on granule farlure is analyzed and its deformation mechanism discussed.
在水平方向上，中国东部地壳的主应力方向为近东西向的压应力，但总体上是向东推移的。
The main horizontal stress in eastern China is the pressure near EW direction, but as a whole, the crust is moving east.
并计算施工过程中墩顶必须承受的最大水平拉力以及钢纵梁的最大轴向压应力。
The maximum horizontal force that the pier must resist and the longitudinal stress of the stringer are studied.
结果表明：显德汪煤矿垂直应力近似等于上覆岩层的自重应力，最大主应力为北东方向，且为近水平压应力。
The results show that vertical stress is equal to overburden stress at shallow level. Maximum principal stress is sub horizontal stress in the NE direction.
油井射孔段天然缝产状、发育程度、水平应力大小直接影响着压裂施工压力。
Strike - dip, development degree and horizontal stress of the natural fracture in oil well perforated intervals affects operated fracturing pressure directly.
利用引伸计拉力试验中的规定总延伸强度可以评价灰铸铁的拉压疲劳极限，也可以利用该数值作为预计的疲劳极限，用于拉压疲劳试验应力水平的选取。
The proof strength can be used to evaluate the tension-compression fatigue strength of gray cast iron, and also used as the stress level of the tension-compression fatigue test.
五次构造运动的最大主压应力均呈近水平方向。
The maximum principal axes of the compressive stress in the five tectonic movements are nearly horizontal.
最大水平主应力方向以近东西向为主，水力压裂裂缝的延伸方向也以近东西向为主；
The conclusion is that the size of terrestrial stress mainly is vertical principal stress maximum and the fracture of hydraulic fracturing is vertical.
依据压裂曲线，利用破裂压力孔隙弹性计算模型，计算得到了在两个水平主应力方向的弹性应变量；
Basing on fractureing calculation model with pore elasticity theory, the elastic strain in horizontal direction has been determined with hydraulic fractureing curve.
该带现今以水平、近于水平兼有一定斜向作用的主压应力为主。
Recent tectonic stress field is entirely dominated by the principal compressive stress with the components, whose orientation is in level, approximate level or sideling direction.
这类土，由于固化联结键和高孔隙度，其压密特性，孔隙压力的变化和剪切应力—应变关系均与应力水平有密切关系。
Owing to the bonds and high porosity in such soils, its characteries of compressibility, the change of pore-pressure and shear stress-strain relationship all depend on stress level.
监测资料分析结果表明：导致面板水平施工缝挤压破损的直接原因是面板水平缝缝面压应力过大和结构上的缺陷；
The results of monitoring data show that the excess stress and structural defects are the direct causes for the crushing and breaking of horizontal construction joints.
结合现场水力压裂试验确定的构造应力系数，实现了利用测井资料计算两个水平地应力的大小。
Combined with hydraulic experiment, certained tectonic stress factor, realized the use of log data to calculate the level of stress in two sizes.
水平井井筒应力分布和岩石破坏准则构成了水平井压裂裂缝起裂数学模型，利用迭代法对模型进行了求解。
The horizontal well stress distribution and the rock failure criterion constitute a fracture initiation mathematical model, which was solved by the iteration method.
水平井井筒应力分布和岩石破坏准则构成了水平井压裂裂缝起裂数学模型，利用迭代法对模型进行了求解。
The horizontal well stress distribution and the rock failure criterion constitute a fracture initiation mathematical model, which was solved by the iteration method.
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