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 218 65.1%
2 United States 39 11.6%
3 Germany 37 11%
4 Netherlands 16 4.8%
5 Taiwan 7 2.1%
6 Hong Kong 4 1.2%
7 Russia 3 0.9%
8 Turkey 2 0.6%
9 Japan 2 0.6%
10 Korea, Republic of 2 0.6%
11 Canada 2 0.6%
12 Bulgaria 1 0.3%
13 Finland 1 0.3%
14 India 1 0.3%