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 202 58.4%
2 United States 74 21.4%
3 Germany 35 10.1%
4 Canada 15 4.3%
5 Hong Kong 4 1.2%
6 Russia 4 1.2%
7 France 3 0.9%
8 Belgium 2 0.6%
9 Singapore 2 0.6%
10 Sweden 2 0.6%
11 Malaysia 1 0.3%
12 Netherlands 1 0.3%
13 Norway 1 0.3%