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 179 60.9%
2 United States 54 18.4%
3 Germany 28 9.5%
4 Canada 17 5.8%
5 Singapore 4 1.4%
6 Russia 3 1%
7 Hong Kong 3 1%
8 Netherlands 2 0.7%
9 Taiwan 2 0.7%
10 Norway 1 0.3%
11 Macao 1 0.3%