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 205 77.1%
2 United States 22 8.3%
3 Netherlands 12 4.5%
4 Korea, Republic of 9 3.4%
5 Germany 6 2.3%
6 Hong Kong 5 1.9%
7 Hungary 2 0.8%
8 France 2 0.8%
9 Canada 1 0.4%
10 Russia 1 0.4%
11 Singapore 1 0.4%