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 208 62.3%
2 United States 52 15.6%
3 Germany 32 9.6%
4 Korea, Republic of 16 4.8%
5 Taiwan 8 2.4%
6 Hong Kong 5 1.5%
7 France 3 0.9%
8 Czech Republic 2 0.6%
9 Ireland 2 0.6%
10 Italy 2 0.6%
11 Netherlands 2 0.6%
12 Singapore 1 0.3%
13 Austria 1 0.3%