BPG致力于知识的发现和传播
Total Visits of This Article
2023 | 总访问次数
排名 国家/地区 数量 占比
1 China 44 67.7%
2 United States 6 9.2%
3 Germany 5 7.7%
4 France 3 4.6%
5 Korea, Republic of 2 3.1%
6 Switzerland 1 1.5%
7 Ukraine 1 1.5%
8 United Kingdom 1 1.5%
9 Azerbaijan 1 1.5%
10 Canada 1 1.5%