论述了孔底应力解除的原理、方法与算式，解决了绝对应力量测问题。
The formulae for calculating the absolute stress, using the stress-relief method at the bottom of a hole are discussed.
结果表明，由应力降估算绝对应力值是一种可行的办法，关键在于应力降结果的可靠性及震源定位精度的提高。
The obtained result indicates that it is an applicable way to estimate the absolute stress value from stress drops, with a key …
经与现有的绝对应力测值对比，发现3000米以上深度，仅有那些有明显垂直运动的地区的应力值可能超出这个界限。
Compared with the available absolute stress measurements, it has been found that the stress value might go beyond the thresholds at the depth over 3000 m, where only obvious vertical motion occurs.
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