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 149 57.8%
2 United States 57 22.1%
3 Germany 28 10.9%
4 Hong Kong 7 2.7%
5 Taiwan 4 1.6%
6 United Kingdom 4 1.6%
7 Netherlands 2 0.8%
8 Sweden 2 0.8%
9 1 0.4%
10 Romania 1 0.4%
11 Russia 1 0.4%
12 Moldova, Republic of 1 0.4%
13 Colombia 1 0.4%