正轴

on-axis的用法和样例：

例句

Draw a line perpendicular to the horizontal axis through the point.通过这两直线的交点做横轴的垂线。
The dipole does not radiate energy in the direction of its axis.偶极子在它的轴的方向上不发射能量。

词汇搭配

on-axis light同轴光
on axis antenna gain天线轴向增益...
normalized on axis field strength归一化轴场强...

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