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 583 54.4%
2 United States 184 17.2%
3 Netherlands 151 14.1%
4 Germany 83 7.7%
5 France 34 3.2%
6 Canada 22 2.1%
7 Finland 3 0.3%
8 Singapore 3 0.3%
9 Hong Kong 2 0.2%
10 India 2 0.2%
11 Korea, Republic of 2 0.2%
12 Sweden 1 0.1%
13 Norway 1 0.1%