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 428 47.5%
2 United States 220 24.4%
3 Netherlands 127 14.1%
4 Germany 51 5.7%
5 Taiwan 19 2.1%
6 Canada 17 1.9%
7 Russia 15 1.7%
8 France 6 0.7%
9 Japan 4 0.4%
10 India 3 0.3%
11 United Kingdom 3 0.3%
12 Romania 3 0.3%
13 Norway 1 0.1%
14 Singapore 1 0.1%
15 Iran, Islamic Republic of 1 0.1%
16 Korea, Republic of 1 0.1%
17 Hong Kong 1 0.1%