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 216 55.2%
2 United States 73 18.7%
3 Germany 45 11.5%
4 Canada 12 3.1%
5 Japan 11 2.8%
6 Malaysia 8 2%
7 Singapore 6 1.5%
8 Russia 5 1.3%
9 Taiwan 3 0.8%
10 Switzerland 2 0.5%
11 Netherlands 2 0.5%
12 Nigeria 2 0.5%
13 Australia 2 0.5%
14 Austria 2 0.5%
15 Hong Kong 1 0.3%
16 Norway 1 0.3%