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 132 48.2%
2 China 96 35%
3 Netherlands 17 6.2%
4 Germany 10 3.6%
5 Russia 6 2.2%
6 Korea, Republic of 3 1.1%
7 Hong Kong 2 0.7%
8 India 2 0.7%
9 New Zealand 2 0.7%
10 Bosnia and Herzegovina 1 0.4%
11 Canada 1 0.4%
12 Iraq 1 0.4%
13 Japan 1 0.4%