Methods Using a homogeneity water equivalent rectangular phantom, the dose gradients at the interface of target volume and normal tissue was evaluated under different scatter radii.
方法采用均质水等效矩形体模，在不同散射半径条件下观察靶区和正常组织界面上的剂量梯度随散射半径的变化。
Based on the equivalent elasticity method, the plane coupling vibration of a rectangular piezoelectric ceramic plate was studied and the resonant frequency equation was derived out.
利用等效弹性法分析了压电矩形共振器的二维耦合振动，导出了振子共振频率的解析表达式。
The results show that the cutoff frequency of the rectangular waveguide tube with the same equivalent radius is far greater than that of the cylindrical tube.
理论研究结果表明：对于同样等效直径的矩形谐振管，其截止频率远大于圆形谐振波导管的截止频率；
Compare to the normal rectangular waveguide, ridge waveguide has the character of broader bandwidth, smaller dimension, lower equivalent characteristic impedance, etc.
与普通矩形波导相比，脊波导具有工作频带宽、尺寸小、等效特性阻抗低等特点。
Birefringent properties of geometrical birefringent optical fibers are analysed by using the method of equivalent waveguide with rectangular regions.
采用等效矩形波导法分析几何双折射光纤的双折射特性，并对双包层椭圆光纤及边隧光纤作实例分析。
A formula for evaluating the equivalent shunt admittance of an inclined slot in the narrow wall of a rectangular waveguide is presented.
本文给出一个矩形波导窄边斜缝等值并联导纳的计算公式。
A formula for evaluating the equivalent shunt admittance of an inclined slot in the narrow wall of a rectangular waveguide is presented.
本文给出一个矩形波导窄边斜缝等值并联导纳的计算公式。
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