多重体 meaning in English

polyad

In the end , the properties of volume holograms and the filtering principles of multiple photorefractive volume gratings are discussed by using volume holograms theory and bragg condition
最后从体全息理论出发，结合布拉格条件，讨论了多重体全息相位栅的滤波原理。
The feasibility of the multiple photorefractive volume applying to wdm system is demonstrated by analyzing the diffractive properties of the eight holographic gratings superimposed in the linbo3 : fe crystal
通过对10 10 10mm ~ 3块状linbo _ 3 : fe晶体中用角度复用技术写入的8重体光栅的衍射特性分析，证实了光写入多重体光栅应用于波分复用系统的可行性。
The angular multiplexing technology for photorefractive grating and exposure technology in the formation of photorefractive multiple volume gratings are further discussed , by which eight photorefractive volume gratings in a linbo3 : fe crystal sample with size of 10x10x 10mm3 have been successfully recorded
进而探讨了体光栅的角度复用技术和多重体光栅写入过程中的曝光技术，用循环曝光法在10 10 10mm ~ 3的块状晶体中成功地写入了8重衍射效率相近的光折变体光栅。