BPG致力于知识的发现和传播
Total Visits of This Article
2022 | 总访问次数
排名 国家/地区 数量 占比
1 United States 40 44%
2 China 17 18.7%
3 Netherlands 16 17.6%
4 Canada 7 7.7%
5 Ukraine 4 4.4%
6 Iran, Islamic Republic of 2 2.2%
7 France 2 2.2%
8 Germany 1 1.1%
9 Egypt 1 1.1%
10 Taiwan 1 1.1%