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 United States 49 43%
2 China 32 28.1%
3 Germany 15 13.2%
4 Netherlands 7 6.1%
5 France 3 2.6%
6 Pakistan 2 1.8%
7 Singapore 1 0.9%
8 Taiwan 1 0.9%
9 Ukraine 1 0.9%
10 United Kingdom 1 0.9%
11 Korea, Republic of 1 0.9%
12 Canada 1 0.9%