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 724 83.7%
2 Germany 55 6.4%
3 United States 52 6%
4 Taiwan 10 1.2%
5 Japan 6 0.7%
6 India 5 0.6%
7 Russia 3 0.3%
8 United Kingdom 3 0.3%
9 Canada 2 0.2%
10 Macao 2 0.2%
11 South Africa 1 0.1%
12 Sweden 1 0.1%
13 Korea, Republic of 1 0.1%