BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 59 52.2%
2 Netherlands 19 16.8%
3 United States 17 15%
4 Germany 8 7.1%
5 France 4 3.5%
6 Australia 2 1.8%
7 Russia 2 1.8%
8 Korea, Republic of 1 0.9%
9 Czech Republic 1 0.9%