Because the concrete has the multiple structure and non-isotropic compound materials system, it will present the error through the partial research to the whole method.
混凝土材料是复杂结构的非均质复合材料体系，通过局部的研究对整体的外推就难免出现谬误。
2
The corrosive cells formed in non-isotropic soil are characterized by their intense corrosive nature, and so the like zone should be kept away as much as possible in survey and design.
异性土壤所形成的腐蚀电池，具有强烈腐蚀的特点，类似这种地带应在勘察设计时尽量避开，绕道而行。
3
When the horizontal in-situ stress is non-uniform, the casing stress is non-uniform at all times not only in the isotropic formation but also the orthotropic ones.