BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 53 41.7%
2 United States 28 22%
3 Germany 13 10.2%
4 France 11 8.7%
5 Korea, Republic of 8 6.3%
6 South Africa 7 5.5%
7 Canada 3 2.4%
8 Australia 2 1.6%
9 Netherlands 1 0.8%
10 Senegal 1 0.8%