principal stress ratio是什么意思 principal stress ratio怎么读
principal stress ratio的相关资料
principal stress ratio的用法和样例
- A method of calculating the pile-soil stress ratio is conducted and the effect on main influence factors is analyzed systemically.
就粉喷桩加固路基的特点，根据力学原理，分析桩土应力比问题，获得一些有益的结论。
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