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 164 56.9%
2 United States 45 15.6%
3 Germany 31 10.8%
4 Canada 27 9.4%
5 Singapore 5 1.7%
6 Hong Kong 4 1.4%
7 Netherlands 3 1%
8 Korea, Republic of 3 1%
9 United Kingdom 3 1%
10 Japan 2 0.7%
11 Moldova, Republic of 1 0.3%