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 550 60%
2 United States 135 14.7%
3 Netherlands 65 7.1%
4 Russia 44 4.8%
5 Germany 38 4.1%
6 France 32 3.5%
7 Canada 19 2.1%
8 Korea, Republic of 15 1.6%
9 Hong Kong 9 1%
10 India 2 0.2%
11 Taiwan 2 0.2%
12 United Kingdom 2 0.2%
13 Singapore 1 0.1%
14 Norway 1 0.1%
15 Bulgaria 1 0.1%