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 407 42.8%
2 United States 357 37.6%
3 Netherlands 102 10.7%
4 Germany 45 4.7%
5 Canada 10 1.1%
6 France 5 0.5%
7 Taiwan 5 0.5%
8 Russia 4 0.4%
9 Turkey 3 0.3%
10 Hong Kong 3 0.3%
11 Korea, Republic of 2 0.2%
12 Sweden 2 0.2%
13 United Kingdom 2 0.2%
14 Viet Nam 2 0.2%
15 Ukraine 1 0.1%