BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 54 38.3%
2 United States 42 29.8%
3 Germany 16 11.3%
4 Netherlands 8 5.7%
5 Canada 5 3.5%
6 Taiwan 3 2.1%
7 Hong Kong 3 2.1%
8 Japan 2 1.4%
9 Czech Republic 2 1.4%
10 Ukraine 1 0.7%
11 United Kingdom 1 0.7%
12 Malaysia 1 0.7%
13 Portugal 1 0.7%
14 Russia 1 0.7%
15 Singapore 1 0.7%