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 235 68.3%
2 United States 54 15.7%
3 Germany 24 7%
4 Hong Kong 9 2.6%
5 Taiwan 6 1.7%
6 Russia 4 1.2%
7 Japan 3 0.9%
8 Moldova, Republic of 3 0.9%
9 Netherlands 2 0.6%
10 Denmark 2 0.6%
11 Korea, Republic of 1 0.3%
12 Singapore 1 0.3%