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 215 46.9%
2 United States 132 28.8%
3 Germany 35 7.6%
4 Canada 25 5.5%
5 Netherlands 15 3.3%
6 Hong Kong 9 2%
7 Taiwan 5 1.1%
8 Singapore 4 0.9%
9 Italy 4 0.9%
10 Lao People's Democratic Republic 3 0.7%
11 Turkey 3 0.7%
12 Sweden 2 0.4%
13 France 2 0.4%
14 Belgium 1 0.2%
15 Japan 1 0.2%
16 Korea, Republic of 1 0.2%
17 Malaysia 1 0.2%