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 233 47.6%
2 United States 195 39.8%
3 Germany 35 7.1%
4 Hong Kong 5 1%
5 Netherlands 4 0.8%
6 Taiwan 4 0.8%
7 Russia 3 0.6%
8 Turkey 2 0.4%
9 Romania 2 0.4%
10 Brazil 2 0.4%
11 Malaysia 2 0.4%
12 Japan 1 0.2%
13 Czech Republic 1 0.2%
14 Singapore 1 0.2%