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 148 55%
2 United States 52 19.3%
3 Germany 29 10.8%
4 Canada 20 7.4%
5 Hong Kong 5 1.9%
6 Taiwan 4 1.5%
7 Moldova, Republic of 3 1.1%
8 Singapore 2 0.7%
9 Japan 2 0.7%
10 Korea, Republic of 2 0.7%
11 Russia 1 0.4%
12 United Kingdom 1 0.4%