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 42 40.8%
2 United States 32 31.1%
3 France 9 8.7%
4 Korea, Republic of 8 7.8%
5 Netherlands 4 3.9%
6 India 4 3.9%
7 Japan 1 1%
8 Switzerland 1 1%
9 Germany 1 1%
10 Hong Kong 1 1%