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 174 42.4%
2 United States 113 27.6%
3 Germany 42 10.2%
4 Netherlands 19 4.6%
5 Sweden 15 3.7%
6 Canada 15 3.7%
7 Russia 9 2.2%
8 Taiwan 3 0.7%
9 Hong Kong 3 0.7%
10 Czech Republic 3 0.7%
11 Japan 2 0.5%
12 India 2 0.5%
13 Thailand 2 0.5%
14 Portugal 2 0.5%
15 Spain 1 0.2%
16 United Kingdom 1 0.2%
17 Switzerland 1 0.2%
18 Italy 1 0.2%
19 Malaysia 1 0.2%
20 Finland 1 0.2%