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 134 57.3%
2 United States 48 20.5%
3 Germany 33 14.1%
4 Hong Kong 6 2.6%
5 United Kingdom 5 2.1%
6 Moldova, Republic of 2 0.9%
7 Russia 2 0.9%
8 Singapore 1 0.4%
9 Ukraine 1 0.4%
10 Netherlands 1 0.4%
11 Japan 1 0.4%