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 162 68.1%
2 United States 38 16%
3 Germany 16 6.7%
4 Korea, Republic of 4 1.7%
5 Russia 3 1.3%
6 Taiwan 3 1.3%
7 Sweden 2 0.8%
8 Hong Kong 2 0.8%
9 Czech Republic 2 0.8%
10 France 2 0.8%
11 Japan 1 0.4%
12 Singapore 1 0.4%
13 Mauritius 1 0.4%
14 Turkey 1 0.4%