The electric characteristic parameters of this novel sleeve antenna are calculated, including the input impedance, voltage standing wave ratio (VSWR), horizontal gain and radiation pattern.
研究了这种新型套筒天线的输入阻抗、电压驻波比（VSWR）、增益及辐射方向图等电特性。
The characteristic of roll pass system in high speed wire mill was introduced, moreover, the deformation parameters and variation regular pattern of the roll pass were analyzed.
介绍高速线材孔型系统的特点，并对其变形参数及其变化规律进行分析。
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