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 442 49.2%
2 United States 282 31.4%
3 Netherlands 71 7.9%
4 Germany 44 4.9%
5 Canada 15 1.7%
6 Russia 8 0.9%
7 Singapore 6 0.7%
8 Sweden 6 0.7%
9 Spain 5 0.6%
10 France 5 0.6%
11 India 3 0.3%
12 Ukraine 3 0.3%
13 Hong Kong 2 0.2%
14 Austria 2 0.2%
15 Brazil 2 0.2%
16 Ireland 1 0.1%
17 United Kingdom 1 0.1%
18 Norway 1 0.1%