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 249 68.4%
2 United States 49 13.5%
3 Germany 39 10.7%
4 India 7 1.9%
5 Pakistan 5 1.4%
6 Japan 3 0.8%
7 Korea, Republic of 2 0.5%
8 Georgia 2 0.5%
9 Australia 2 0.5%
10 Singapore 2 0.5%
11 Taiwan 1 0.3%
12 Ukraine 1 0.3%
13 Canada 1 0.3%
14 Hong Kong 1 0.3%