usef meaning in English
有用的
Examples
- Abstract : a conclusion has been proved indelail that only if the na tural frequency k of a symmetric structure is nota duplicate root , the vibra tion mode of the strusture must be symmetrical orantisymmetrical . this conclusio n is advantageous to simplify the structural dynamicanalysis and pratically usef ul
文摘:给出了有关对称结构体系的动力特性的一个结论：对称的结构振动体系，对应于任一非重根的自振频率，其主振型必定是对称的或反对称的.并给出了详细的证明.应用这个结论，有利于对称结构动力分析的简化，具有实用价值