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 228 54.9%
2 United States 87 21%
3 Germany 36 8.7%
4 Canada 22 5.3%
5 Netherlands 8 1.9%
6 Hong Kong 5 1.2%
7 Italy 4 1%
8 Norway 3 0.7%
9 Singapore 3 0.7%
10 South Africa 3 0.7%
11 Poland 2 0.5%
12 Taiwan 2 0.5%
13 Ukraine 2 0.5%
14 Japan 2 0.5%
15 Austria 2 0.5%
16 India 2 0.5%
17 Australia 1 0.2%
18 Moldova, Republic of 1 0.2%
19 United Kingdom 1 0.2%
20 Switzerland 1 0.2%