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 433 57.2%
2 United States 209 27.6%
3 Germany 37 4.9%
4 Netherlands 29 3.8%
5 Taiwan 15 2%
6 Hong Kong 13 1.7%
7 Canada 6 0.8%
8 Ireland 3 0.4%
9 Macao 3 0.4%
10 Malaysia 3 0.4%
11 Russia 2 0.3%
12 Singapore 2 0.3%
13 Kenya 1 0.1%
14 Lao People's Democratic Republic 1 0.1%