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 146 44.5%
2 United States 62 18.9%
3 Germany 43 13.1%
4 Hong Kong 20 6.1%
5 Taiwan 16 4.9%
6 Canada 8 2.4%
7 Singapore 6 1.8%
8 Malaysia 5 1.5%
9 Australia 5 1.5%
10 Russia 4 1.2%
11 Moldova, Republic of 2 0.6%
12 Netherlands 2 0.6%
13 Switzerland 2 0.6%
14 Denmark 2 0.6%
15 India 2 0.6%
16 Japan 2 0.6%
17 Madagascar 1 0.3%