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 190 65.3%
2 Germany 41 14.1%
3 United States 29 10%
4 Hong Kong 9 3.1%
5 Switzerland 4 1.4%
6 Taiwan 3 1%
7 Czech Republic 2 0.7%
8 Malaysia 2 0.7%
9 Netherlands 2 0.7%
10 Poland 2 0.7%
11 Russia 2 0.7%
12 Greece 1 0.3%
13 Thailand 1 0.3%
14 Ukraine 1 0.3%
15 Japan 1 0.3%
16 Canada 1 0.3%