It is pointed out that the external causes of cracks originating are effected by static pressure, thermal stress and structural shrinking stress and etc.
指出裂纹产生的外因是钢水的静压力、热应力、组织收缩应力和其它外力的作用。
And use the fourth strength theory, the axial tension in the coiled tubing under the influence of internal and external pressure from a comprehensive stress of checking.
并利用第四强度理论，对连续油管在轴向拉力与内外压力的作用下的综合应力进行了校核。
The material stress in rolling contact results from the external loading of a bearing under contact pressure as well as from additional stresses of a mechanical, chemical or thermal nature.
材料的应力在滚动结果从外在负载下的轴承接触压力以及从附加应力的机械、化工或热性质。
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