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 222 48.1%
2 United States 140 30.3%
3 Germany 42 9.1%
4 Hong Kong 19 4.1%
5 Taiwan 15 3.2%
6 Netherlands 6 1.3%
7 India 5 1.1%
8 Ukraine 4 0.9%
9 Macao 3 0.6%
10 United Kingdom 2 0.4%
11 Singapore 1 0.2%
12 Belgium 1 0.2%
13 Brazil 1 0.2%
14 Canada 1 0.2%