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 63 42%
2 United States 35 23.3%
3 Germany 17 11.3%
4 Netherlands 12 8%
5 Hong Kong 5 3.3%
6 Taiwan 5 3.3%
7 3 2%
8 France 2 1.3%
9 Norway 2 1.3%
10 Russia 2 1.3%
11 Sweden 1 0.7%
12 Portugal 1 0.7%
13 Canada 1 0.7%
14 New Zealand 1 0.7%