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 450 59.5%
2 Netherlands 110 14.6%
3 United States 106 14%
4 Germany 46 6.1%
5 Canada 11 1.5%
6 Australia 6 0.8%
7 France 5 0.7%
8 India 4 0.5%
9 Ukraine 3 0.4%
10 United Kingdom 3 0.4%
11 Russia 2 0.3%
12 Belize 2 0.3%
13 Bulgaria 2 0.3%
14 Chile 2 0.3%
15 Hong Kong 1 0.1%
16 Singapore 1 0.1%
17 Korea, Republic of 1 0.1%
18 Mauritius 1 0.1%