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1·The circumferential normal stress is tensile.

周向正应力是张性的。

2·A normal stress is positive if it is tensile.

如果是拉应力，则该应力为正。

3·The normal stress in the center is only 77% of the average value.

正应力在边缘有应力集中，中央应力约为平均正应力的77%。

4·Objective: To realize normal stress distribution of lumbar vertebral body.

目的：了解正常人腰椎椎体的应力分布特点。

5·The larger the density, the lower the effective mean normal stress, the more dilative response is.

土的密度越大，有效平均正应力越低，土的剪胀性就越大。

6·On the one hand guaranteeing reducing normal stress depression, enhancing the non-dense weld ability;

一方面保证了法向应力的降低，提高非密实件的可焊性能；

7·But many tests show the shear strength of the rockfill material is a nonlinear function of the normal stress.

试验表明堆石材料的抗剪强度更符合非线性表达式。

8·Normal stress analysis and shear stress analysis arc performed by means of the approach of materials mechanics.

利用材料力学方法对这种梁进行了应力分析，包括正应力分析和剪应力分析。

9·The paper has also made analysis of the characteristics of the rock mass shear strength under high normal stress.

分析了高正应力条件下岩体抗剪强度的特征。

10·Whether the normal stress and static Coulomb failure stress have the effect on triggering aftershocks is analyzed.

分析了正应力变化和静态库仑破裂应力变化是否对余震有触发作用。

正应力

1·The effect of the first normal stress difference increases the load capacity obviously under the condition of the dynamic load, and it also affects the locus of shaft center.

在动载荷条件下，第一正应力差效应明显增强了油膜压力和承载力，并对轴心轨迹产生影响。

2·The cleavage fracture of the notched specimens with various sizes and widths is mainly controlled by the criterion of normal stress.

不同尺寸和宽度的缺口试样的解理断裂主要由正应力判据控制。