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 503 48.6%
2 United States 244 23.6%
3 Netherlands 150 14.5%
4 France 51 4.9%
5 Germany 36 3.5%
6 Canada 11 1.1%
7 Taiwan 8 0.8%
8 Korea, Republic of 7 0.7%
9 Hong Kong 6 0.6%
10 India 5 0.5%
11 Macao 4 0.4%
12 Russia 4 0.4%
13 Bahrain 2 0.2%
14 Italy 2 0.2%
15 Japan 2 0.2%
16 Ukraine 1 0.1%