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 91 61.9%
2 United States 17 11.6%
3 Netherlands 13 8.8%
4 France 9 6.1%
5 Germany 8 5.4%
6 Belarus 3 2%
7 United Kingdom 2 1.4%
8 Korea, Republic of 2 1.4%
9 Canada 1 0.7%
10 Hong Kong 1 0.7%