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 733 78.6%
2 United States 101 10.8%
3 Germany 33 3.5%
4 Singapore 16 1.7%
5 Russia 11 1.2%
6 Canada 10 1.1%
7 Hong Kong 10 1.1%
8 Japan 6 0.6%
9 Australia 3 0.3%
10 Taiwan 3 0.3%
11 Ukraine 2 0.2%
12 1 0.1%
13 Czech Republic 1 0.1%
14 Netherlands 1 0.1%
15 Iran, Islamic Republic of 1 0.1%