大修中喷丸层的恢复相当重要，确保喷丸压缩层的剩余应力大修或应力恢复。
Restoration of the shot-peened layer during overhaul is important to ensure that the shot-peen compressive residual stresses are maintained or restored.
在此基础上，我们继续讨论了超收敛单元片应力恢复（SPR）技巧与有限元校正的问题。
Furthermore, we discuss SPR technique and finite element correction, we proved some results of SPR technique and obtained global ultraconvergence by correction.
留设保护煤柱时，底板岩巷应位于集中应力区的外侧或跨采时工作面应推过足够距离，使巷道靠近采空区应力恢复区的下方。
The floor roadway should be located out of the abutment stress zone when protection coal pillar is retained, or the working face should be pushed away for enough distance under overhead mining.
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