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 543 40.3%
2 United States 275 20.4%
3 Netherlands 234 17.4%
4 Germany 96 7.1%
5 France 93 6.9%
6 Russia 52 3.9%
7 Czech Republic 15 1.1%
8 Canada 13 1%
9 India 5 0.4%
10 Spain 4 0.3%
11 Ukraine 4 0.3%
12 Australia 3 0.2%
13 United Kingdom 2 0.1%
14 Taiwan 2 0.1%
15 Portugal 2 0.1%
16 Singapore 1 0.1%
17 Iraq 1 0.1%
18 Korea, Republic of 1 0.1%