Decreasing of the minimal horizontal principal stress, or more, may he responsible for a trigger of the earthquake associated with a change in stresses.
应力改变触发地震的机制，主要是由于最小水平主应力的减小，或两个水平主应力同时减小。
The principle and structure of a new trigger horizontal oil well cable butt tool are introduced.
介绍了一种新型水平井电缆对接工具的设计原理及设计要点。
The principle and structure of a new trigger horizontal oil well cable butt tool are introduced.
介绍了一种新型水平井电缆对接工具的设计原理及设计要点。
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