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 155 54.6%
2 United States 53 18.7%
3 Germany 42 14.8%
4 Canada 8 2.8%
5 Singapore 7 2.5%
6 Netherlands 6 2.1%
7 Hong Kong 4 1.4%
8 Australia 3 1.1%
9 Japan 2 0.7%
10 Serbia 2 0.7%
11 Korea, Republic of 1 0.4%
12 Russia 1 0.4%