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 348 73%
2 United States 53 11.1%
3 Germany 46 9.6%
4 Hong Kong 8 1.7%
5 Netherlands 8 1.7%
6 Russia 3 0.6%
7 Austria 3 0.6%
8 Canada 2 0.4%
9 Denmark 2 0.4%
10 Singapore 2 0.4%
11 Korea, Republic of 1 0.2%
12 France 1 0.2%