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 191 58.8%
2 United States 59 18.2%
3 Germany 42 12.9%
4 Canada 9 2.8%
5 Taiwan 4 1.2%
6 Singapore 4 1.2%
7 Switzerland 3 0.9%
8 Hong Kong 2 0.6%
9 Malaysia 2 0.6%
10 Netherlands 2 0.6%
11 France 2 0.6%
12 Bulgaria 2 0.6%
13 Australia 1 0.3%
14 Romania 1 0.3%
15 Japan 1 0.3%