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 40 46%
2 United States 16 18.4%
3 Netherlands 11 12.6%
4 France 5 5.7%
5 Korea, Republic of 4 4.6%
6 Singapore 3 3.4%
7 Germany 3 3.4%
8 United Kingdom 2 2.3%
9 Canada 1 1.1%
10 Hong Kong 1 1.1%
11 Japan 1 1.1%