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 445 38.6%
2 United States 229 19.9%
3 Netherlands 210 18.2%
4 France 96 8.3%
5 Germany 82 7.1%
6 Canada 30 2.6%
7 Hong Kong 14 1.2%
8 Taiwan 10 0.9%
9 Mongolia 9 0.8%
10 Ukraine 5 0.4%
11 Japan 4 0.3%
12 Norway 3 0.3%
13 Sweden 3 0.3%
14 Singapore 2 0.2%
15 Korea, Republic of 2 0.2%
16 Israel 2 0.2%
17 Denmark 2 0.2%
18 Finland 2 0.2%
19 Australia 1 0.1%
20 India 1 0.1%
21 Luxembourg 1 0.1%