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 146 57.5%
2 United States 40 15.7%
3 Netherlands 22 8.7%
4 Germany 12 4.7%
5 Korea, Republic of 8 3.1%
6 Senegal 6 2.4%
7 Hong Kong 5 2%
8 Canada 4 1.6%
9 France 3 1.2%
10 Italy 3 1.2%
11 Taiwan 2 0.8%
12 Spain 1 0.4%
13 Malaysia 1 0.4%
14 Brazil 1 0.4%