受衍射效应的限制，聚焦红外光斑的尺寸往往大于焦平面阵列像素尺寸，串音测量遇到了极大困难。
Limited by diffraction effect, the size of focused IR spot is usually larger than the pixel pitch of FPAs, hence the crosstalk testing is quite difficult.
受衍射效应的限制，聚焦红外光斑的尺寸往往大于焦平面阵列像素尺寸，串音测量遇到了极大困难。
Limited by diffraction effect, the size of focused IR spot is usually larger than the pixel pitch of FPAs, hence the crosstalk testing is quite difficult.
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