与采用相同口径、相同相对孔径的全息凹球面光栅构成的平场光谱仪比较，在入射狭缝宽度相同的情况下，该光栅所构成的平场光谱仪的分辨率得到明显提高。

Comparing this spectrograph to the one with a holographic concave grating on spherical surface, the former has a higher resolution than the latter has when the widths of the incident slits are same.

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