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 200 47.7%
2 United States 121 28.9%
3 Germany 53 12.6%
4 Taiwan 18 4.3%
5 Spain 6 1.4%
6 Hong Kong 5 1.2%
7 Russia 5 1.2%
8 Australia 4 1%
9 Canada 3 0.7%
10 Japan 2 0.5%
11 Netherlands 1 0.2%
12 Slovakia 1 0.2%