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 235 60.7%
2 United States 73 18.9%
3 Germany 29 7.5%
4 Canada 26 6.7%
5 Netherlands 11 2.8%
6 Taiwan 4 1%
7 Turkey 2 0.5%
8 Singapore 2 0.5%
9 Australia 2 0.5%
10 Spain 1 0.3%
11 Hong Kong 1 0.3%
12 Ireland 1 0.3%