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 207 50.7%
2 United States 129 31.6%
3 Germany 44 10.8%
4 Taiwan 5 1.2%
5 Hong Kong 4 1%
6 Canada 3 0.7%
7 Netherlands 3 0.7%
8 Russia 3 0.7%
9 Singapore 2 0.5%
10 Australia 2 0.5%
11 Czech Republic 2 0.5%
12 Kazakhstan 2 0.5%
13 Ukraine 1 0.2%
14 Sweden 1 0.2%