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 615 53.9%
2 United States 186 16.3%
3 Netherlands 162 14.2%
4 Germany 83 7.3%
5 France 38 3.3%
6 Canada 16 1.4%
7 Sweden 11 1%
8 Taiwan 6 0.5%
9 Ukraine 6 0.5%
10 Singapore 4 0.4%
11 Norway 3 0.3%
12 Russia 2 0.2%
13 New Zealand 2 0.2%
14 United Kingdom 2 0.2%
15 Australia 2 0.2%
16 Japan 2 0.2%
17 Korea, Republic of 1 0.1%
18 India 1 0.1%