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 855 54.1%
2 United States 371 23.5%
3 Netherlands 190 12%
4 Germany 86 5.4%
5 France 33 2.1%
6 Canada 18 1.1%
7 Japan 5 0.3%
8 Korea, Republic of 3 0.2%
9 Hong Kong 3 0.2%
10 India 2 0.1%
11 Singapore 2 0.1%
12 Taiwan 2 0.1%
13 Turkey 2 0.1%
14 Ukraine 2 0.1%
15 United Kingdom 2 0.1%
16 Switzerland 1 0.1%
17 Macao 1 0.1%
18 Norway 1 0.1%
19 Russia 1 0.1%