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 233 49.3%
2 United States 120 25.4%
3 Netherlands 33 7%
4 Germany 29 6.1%
5 Canada 27 5.7%
6 Taiwan 8 1.7%
7 Singapore 7 1.5%
8 Spain 6 1.3%
9 Russia 4 0.8%
10 Hong Kong 3 0.6%
11 Australia 2 0.4%
12 Sweden 1 0.2%