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 45 46.4%
2 United States 14 14.4%
3 Germany 13 13.4%
4 Netherlands 8 8.2%
5 Canada 6 6.2%
6 Russia 2 2.1%
7 India 2 2.1%
8 Japan 2 2.1%
9 Australia 2 2.1%
10 Brazil 1 1%
11 France 1 1%
12 Hong Kong 1 1%