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 243 64.3%
2 Germany 58 15.3%
3 United States 45 11.9%
4 Taiwan 10 2.6%
5 Netherlands 6 1.6%
6 Macao 5 1.3%
7 Canada 3 0.8%
8 Russia 2 0.5%
9 Singapore 2 0.5%
10 Korea, Republic of 2 0.5%
11 Estonia 1 0.3%
12 France 1 0.3%