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 128 54.2%
2 China 41 17.4%
3 Netherlands 28 11.9%
4 Germany 9 3.8%
5 Hong Kong 5 2.1%
6 Malaysia 5 2.1%
7 Brazil 4 1.7%
8 Taiwan 4 1.7%
9 United Kingdom 4 1.7%
10 Canada 3 1.3%
11 Singapore 2 0.8%
12 Sweden 2 0.8%
13 Russia 1 0.4%