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 506 61.2%
2 United States 128 15.5%
3 Netherlands 101 12.2%
4 Germany 43 5.2%
5 Canada 9 1.1%
6 Russia 7 0.8%
7 Sweden 7 0.8%
8 France 6 0.7%
9 Turkey 4 0.5%
10 United Kingdom 3 0.4%
11 Hong Kong 3 0.4%
12 India 3 0.4%
13 Israel 2 0.2%
14 Moldova, Republic of 2 0.2%
15 Norway 1 0.1%
16 Poland 1 0.1%
17 Singapore 1 0.1%