An active receiving antenna consisting of conicalhelix antenna and a negative impedance changing circuit is analyzed in this paper.
对用负阻抗变换电路同圆锥螺旋天线相结合,构成的有源接收天线进行了理论分析。
2
This paper simplifies the gear change calculation and machine adjustment in machining equiangular helixconical milling cutter with non-circular gear method.
本文着重介绍了用非圆齿轮法加工等螺旋角锥铣刀时,使挂轮计算和调整最简化的问题。
3
There is no common normal in the conical involute gear and the fixed chordal tooth thickness can not be measured accurately because of the coexistence of helix angle and taper.