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 118 35.6%
2 United States 110 33.2%
3 Netherlands 25 7.6%
4 Germany 20 6%
5 Hong Kong 19 5.7%
6 Russia 13 3.9%
7 Poland 6 1.8%
8 Korea, Republic of 5 1.5%
9 Ghana 4 1.2%
10 Norway 3 0.9%
11 India 2 0.6%
12 Ireland 2 0.6%
13 Japan 1 0.3%
14 Greece 1 0.3%
15 Denmark 1 0.3%
16 Ukraine 1 0.3%