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 257 48.1%
2 United States 219 41%
3 Germany 40 7.5%
4 Singapore 5 0.9%
5 Georgia 2 0.4%
6 Hong Kong 2 0.4%
7 United Kingdom 2 0.4%
8 Canada 1 0.2%
9 Indonesia 1 0.2%
10 Korea, Republic of 1 0.2%
11 Malaysia 1 0.2%
12 Netherlands 1 0.2%
13 Taiwan 1 0.2%
14 Ukraine 1 0.2%