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 164 40.9%
2 United States 150 37.4%
3 Germany 32 8%
4 Canada 28 7%
5 Netherlands 6 1.5%
6 Hong Kong 5 1.2%
7 Belgium 4 1%
8 Russia 4 1%
9 Singapore 2 0.5%
10 France 2 0.5%
11 Korea, Republic of 2 0.5%
12 Mauritius 1 0.2%
13 Taiwan 1 0.2%