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 184 67.2%
2 United States 48 17.5%
3 Netherlands 12 4.4%
4 Germany 6 2.2%
5 Korea, Republic of 6 2.2%
6 Canada 6 2.2%
7 Norway 4 1.5%
8 Russia 2 0.7%
9 France 2 0.7%
10 Taiwan 1 0.4%
11 Turkey 1 0.4%
12 Macao 1 0.4%
13 Mauritius 1 0.4%