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 169 51.7%
2 United States 85 26%
3 Germany 37 11.3%
4 Canada 15 4.6%
5 Taiwan 5 1.5%
6 Hong Kong 4 1.2%
7 Korea, Republic of 3 0.9%
8 Italy 2 0.6%
9 Czech Republic 2 0.6%
10 2 0.6%
11 Bulgaria 1 0.3%
12 France 1 0.3%
13 Ireland 1 0.3%