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 191 66.6%
2 United States 47 16.4%
3 Germany 32 11.1%
4 Netherlands 6 2.1%
5 United Kingdom 3 1%
6 Singapore 3 1%
7 Turkmenistan 2 0.7%
8 Hong Kong 2 0.7%
9 Russia 1 0.3%