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 417 54.2%
2 United States 156 20.3%
3 Netherlands 108 14%
4 Germany 49 6.4%
5 Canada 10 1.3%
6 Russia 4 0.5%
7 Singapore 4 0.5%
8 Hong Kong 4 0.5%
9 France 4 0.5%
10 Taiwan 3 0.4%
11 Japan 3 0.4%
12 Timor-Leste 2 0.3%
13 India 2 0.3%
14 Ireland 1 0.1%
15 Australia 1 0.1%
16 Brazil 1 0.1%
17 Korea, Republic of 1 0.1%