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 394 57.5%
2 United States 139 20.3%
3 Netherlands 56 8.2%
4 Germany 53 7.7%
5 Canada 16 2.3%
6 Hong Kong 5 0.7%
7 France 4 0.6%
8 Taiwan 4 0.6%
9 Korea, Republic of 2 0.3%
10 Norway 2 0.3%
11 Sweden 2 0.3%
12 India 2 0.3%
13 Australia 2 0.3%
14 Czech Republic 2 0.3%
15 Iran, Islamic Republic of 1 0.1%
16 Ukraine 1 0.1%