Transmission characteristics of Y type S type and "-" type SAW mass sensors are derived by P matrix representation.
应用P矩阵法推导了Y型、S型及“一”字型双声路声表面波质量传感器件的传输特性；
Compared with quadtree representation, the average space saving of P-quadtree representation is about 94%.
这种表示与四元树表示相比较，约节省存贮空间94%。
The combination of Orienteering sports and prototype ecological natural environment is the perfect representation of the modern P. E. ideas.
定向运动与原生态自然环境的结合是现代体育理念的完美体现。
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