英语语法分析

However, the nonlinearity of the octopole magnet changes the dynamic aperture, and lowers the injection efficiency.

然而八极铁的非线性效应会改变束流的动力学孔径，影响注入效率，从而限制流强的进一步提高。

The gun is composed of the liquid metal ion source of Ga, the tip microadjusters' assembly, the ion lens, and the electrostatic octopole deflector.

它由液态金属离子源，源尖微调装置，离子透镜及静电八极偏转器等组成。