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 165 56.9%
2 United States 65 22.4%
3 Germany 31 10.7%
4 Korea, Republic of 15 5.2%
5 Sweden 4 1.4%
6 United Kingdom 2 0.7%
7 Czech Republic 2 0.7%
8 France 2 0.7%
9 Singapore 2 0.7%
10 Hong Kong 1 0.3%
11 Malaysia 1 0.3%