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 175 59.1%
2 United States 37 12.5%
3 Germany 25 8.4%
4 Netherlands 21 7.1%
5 Hong Kong 9 3%
6 Korea, Republic of 6 2%
7 Russia 5 1.7%
8 United Kingdom 3 1%
9 Canada 3 1%
10 Australia 2 0.7%
11 South Africa 2 0.7%
12 New Zealand 2 0.7%
13 Norway 2 0.7%
14 Singapore 1 0.3%
15 Taiwan 1 0.3%
16 Brazil 1 0.3%
17 Israel 1 0.3%