Warning: file_put_contents(): Only 0 of 4837 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/001308.com/index.php on line 55 国内一区二区三免费视频,在线无码高清视频八区,999久久66久6只有精品
The prepartion and relative determinations of new electroluminescence polymer PPV are reported in this paper. 報(bào)道了新型電致發(fā)光材料聚對(duì)苯乙炔的制備過(guò)程和有關(guān)測(cè)試結(jié)果。