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 350 48.1%
2 United States 164 22.5%
3 Netherlands 115 15.8%
4 Germany 61 8.4%
5 Canada 15 2.1%
6 France 4 0.5%
7 Norway 3 0.4%
8 Singapore 3 0.4%
9 Romania 2 0.3%
10 United Kingdom 2 0.3%
11 India 2 0.3%
12 Japan 2 0.3%
13 Korea, Republic of 2 0.3%
14 Ireland 1 0.1%
15 Finland 1 0.1%
16 Taiwan 1 0.1%