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 6 27.3%
2 United States 5 22.7%
3 Germany 2 9.1%
4 Moldova, Republic of 2 9.1%
5 Netherlands 2 9.1%
6 Russia 1 4.5%
7 Singapore 1 4.5%
8 United Kingdom 1 4.5%
9 Hong Kong 1 4.5%
10 France 1 4.5%