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 163 47.4%
2 United States 78 22.7%
3 Germany 33 9.6%
4 Canada 28 8.1%
5 Hong Kong 15 4.4%
6 Netherlands 9 2.6%
7 Japan 5 1.5%
8 Taiwan 3 0.9%
9 Singapore 2 0.6%
10 Bulgaria 2 0.6%
11 Czech Republic 2 0.6%
12 France 2 0.6%
13 Malaysia 1 0.3%
14 Viet Nam 1 0.3%