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。

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Coefficients of dynamic stress concentration change with lining aperture, thickness of lining, wave number and type of lining.

介质和衬砌内动应力集中系数随孔径、衬砌厚度、波数变化而变化，且与衬砌性质有关。

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Rotating aperture cone shearing white-light speckle photography for measuring dynamic derivatives of displacements is proposed in this paper.

利用旋转孔径技术和锥镜剪切技术进行白光散斑剪切照相，检测动态位移导数场。

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