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 92 38.5%
2 United States 91 38.1%
3 Netherlands 19 7.9%
4 Germany 7 2.9%
5 Korea, Republic of 7 2.9%
6 Canada 5 2.1%
7 Senegal 4 1.7%
8 Australia 3 1.3%
9 France 2 0.8%
10 Malaysia 2 0.8%
11 Japan 2 0.8%
12 Russia 2 0.8%
13 New Zealand 1 0.4%
14 Norway 1 0.4%
15 Hong Kong 1 0.4%