The second image is obtained by rotating the cross-grating interferometer an angle about its axis of symmetry.
将光栅干涉仪绕其对称轴转过一角度，得到第二个像。
The interference pattern of a cross-grating interferometer is analyzed by the so-calledeffective source approach.
本文用有效光源法分析了正交光栅干涉仪的干涉图。
The interference pattern of a cross-grating interferometer is analyzed by the so-calledeffective source approach.
本文用有效光源法分析了正交光栅干涉仪的干涉图。
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