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 201 72.3%
2 United States 38 13.7%
3 Netherlands 19 6.8%
4 Canada 7 2.5%
5 Germany 4 1.4%
6 Taiwan 3 1.1%
7 Hong Kong 2 0.7%
8 Korea, Republic of 1 0.4%
9 Denmark 1 0.4%
10 France 1 0.4%
11 United Kingdom 1 0.4%