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 United States 59 59.6%
2 Netherlands 11 11.1%
3 China 9 9.1%
4 Portugal 5 5.1%
5 Spain 4 4%
6 Korea, Republic of 3 3%
7 Taiwan 2 2%
8 France 2 2%
9 Germany 2 2%
10 Hong Kong 2 2%