For both materials (especially HD80), rough up the glue surface first with coarse sand paper, then apply a coat of cement and let it dry.
为两种材料(尤其是hd80)，粗糙了胶的表面首先与粗砂的文件，然后申请一件外套，水泥，让它干。
2
The laser backscattering polarization characteristics of roughsurface are investigatedin this paper, it is a fundamental issue to laser detection, target recognition and other fieldsof study.