该文应用坐标变换法对该聚焦换能器的复杂声场分布进行了数值计算，并测定了其声功率。
The complex sound field distribution of the focused transducers was calculated by the coordinate transform method, and the acoustic power was measured.
通过合理分析提出了便于计算多波长双向抽运光纤拉曼放大器信号及噪声功率的实用数值模型，给出求解信号和噪声功率的快速算法。
A novel numerical model and an efficient algorithm are developed to calculate the powers of signal and noise light waves in multiple wavelengths bidirectionally pumping fiber Raman amplifiers.
声压级及声功率级的测量和计算。
Measurement and calculation of sound pressure level and sound power level.
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