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 270 57.4%
2 United States 140 29.8%
3 Germany 31 6.6%
4 Korea, Republic of 5 1.1%
5 Singapore 4 0.9%
6 Canada 4 0.9%
7 Hong Kong 3 0.6%
8 Malaysia 3 0.6%
9 Romania 2 0.4%
10 Taiwan 2 0.4%
11 Italy 2 0.4%
12 Australia 2 0.4%
13 Belgium 1 0.2%
14 Ireland 1 0.2%