直到1970年时, 开发者们显然在这场斗争中仍占据着上风.Until 1970, the developers clearly had the upper hand in this struggle.加利福尼亚在19世纪是许多开发者西进的目标.California was the goal of many pioneers in the 1800's.不难预见,环保主义者和资源开发者之间将会发生相当多的冲突.It takes ...
Macroscopic deviations from isotropy occur due to bedding, schistosity and also sometimes fracturing.与各向同性相差很大的情况往往产生于层理, 片理,某些时候则由于断裂所造成.Local deviations depend strongly on the local geometry of the solid matrix.局部偏离严格地...