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 371 53.5%
2 United States 147 21.2%
3 Canada 47 6.8%
4 Germany 39 5.6%
5 Netherlands 26 3.7%
6 Hong Kong 15 2.2%
7 Sweden 13 1.9%
8 Taiwan 9 1.3%
9 Russia 7 1%
10 Singapore 7 1%
11 Moldova, Republic of 3 0.4%
12 Japan 3 0.4%
13 Malaysia 2 0.3%
14 Australia 2 0.3%
15 Bulgaria 1 0.1%
16 Greece 1 0.1%
17 Latvia 1 0.1%