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 251 53.2%
2 United States 141 29.9%
3 Germany 33 7%
4 Canada 13 2.8%
5 Hong Kong 7 1.5%
6 Japan 5 1.1%
7 France 5 1.1%
8 Taiwan 5 1.1%
9 Russia 3 0.6%
10 Singapore 2 0.4%
11 Malaysia 2 0.4%
12 Mexico 2 0.4%
13 Australia 1 0.2%
14 Spain 1 0.2%
15 Viet Nam 1 0.2%