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 147 57.2%
2 Germany 50 19.5%
3 United States 39 15.2%
4 Hong Kong 5 1.9%
5 Netherlands 3 1.2%
6 Russia 2 0.8%
7 Singapore 2 0.8%
8 Spain 2 0.8%
9 Taiwan 2 0.8%
10 United Kingdom 2 0.8%
11 Canada 2 0.8%
12 Moldova, Republic of 1 0.4%