Some stress components in a formation can be measured directly, and others can be derived from knownquantities, but some must be estimated based on correlations.
地层的一些分应力可以直接测量,而且其它的可以从已知数推导,但是一些必须根据相互关系而估计。
3
This union connects the discipline of thinking with the discipline of making, the discovery of knownquantities and ideas in physical form and material properties.