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 46.8%
2 United States 139 31.4%
3 Netherlands 37 8.4%
4 Germany 33 7.5%
5 Canada 10 2.3%
6 India 5 1.1%
7 Hong Kong 2 0.5%
8 Czech Republic 2 0.5%
9 Singapore 2 0.5%
10 United Kingdom 2 0.5%
11 Poland 1 0.2%
12 1 0.2%
13 Ireland 1 0.2%