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 177 56.2%
2 United States 49 15.6%
3 Germany 45 14.3%
4 Netherlands 25 7.9%
5 Taiwan 5 1.6%
6 Ukraine 3 1%
7 Russia 3 1%
8 Singapore 3 1%
9 Hong Kong 2 0.6%
10 Moldova, Republic of 1 0.3%
11 Bangladesh 1 0.3%
12 Canada 1 0.3%