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 194 59.5%
2 United States 46 14.1%
3 Germany 43 13.2%
4 Taiwan 9 2.8%
5 Netherlands 7 2.1%
6 United Kingdom 6 1.8%
7 Hong Kong 5 1.5%
8 Australia 4 1.2%
9 Singapore 4 1.2%
10 Bulgaria 2 0.6%
11 Canada 2 0.6%
12 Switzerland 1 0.3%
13 Poland 1 0.3%
14 Romania 1 0.3%
15 Turkey 1 0.3%