正确选取全息片的偏置透射率，可使反射显示的衍射效率接近或略高于透射显示的衍射效率。
A properly choiced bias transmittance of the hologram can lead to a diffraction efficiency close to or a little higher than that of transmission reconstruction.
正确选取全息片的偏置透射率，可使反射显示的衍射效率接近或略高于透射显示的衍射效率。
A properly choiced bias transmittance of the hologram can lead to a diffraction efficiency close to or a little higher than that of transmission reconstruction.
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