BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 Netherlands 17 30.4%
2 United States 17 30.4%
3 Germany 10 17.9%
4 China 5 8.9%
5 Hong Kong 3 5.4%
6 Moldova, Republic of 1 1.8%
7 France 1 1.8%
8 Russia 1 1.8%
9 United Kingdom 1 1.8%