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 227 49.1%
2 United States 93 20.1%
3 Netherlands 43 9.3%
4 Germany 39 8.4%
5 Canada 13 2.8%
6 Sweden 12 2.6%
7 Taiwan 12 2.6%
8 Russia 6 1.3%
9 Hong Kong 5 1.1%
10 France 3 0.6%
11 Japan 2 0.4%
12 Malaysia 2 0.4%
13 Ukraine 2 0.4%
14 Turkey 1 0.2%
15 Uzbekistan 1 0.2%
16 Singapore 1 0.2%