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 United States 90 35.2%
2 China 87 34%
3 Netherlands 25 9.8%
4 Hong Kong 15 5.9%
5 Germany 8 3.1%
6 Russia 8 3.1%
7 Poland 6 2.3%
8 Korea, Republic of 5 2%
9 Ghana 4 1.6%
10 Norway 3 1.2%
11 India 2 0.8%
12 Japan 1 0.4%
13 Denmark 1 0.4%
14 Ukraine 1 0.4%