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 260 64.8%
2 United States 65 16.2%
3 Germany 38 9.5%
4 France 7 1.7%
5 Netherlands 7 1.7%
6 Sweden 7 1.7%
7 Taiwan 3 0.7%
8 Japan 2 0.5%
9 Australia 2 0.5%
10 Canada 2 0.5%
11 Hong Kong 2 0.5%
12 Iran, Islamic Republic of 2 0.5%
13 Italy 1 0.2%
14 India 1 0.2%
15 Mauritius 1 0.2%
16 Thailand 1 0.2%