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 194 57.7%
2 United States 59 17.6%
3 Germany 32 9.5%
4 Canada 21 6.2%
5 Taiwan 7 2.1%
6 Ireland 6 1.8%
7 Iran, Islamic Republic of 5 1.5%
8 Hong Kong 4 1.2%
9 Netherlands 2 0.6%
10 Singapore 2 0.6%
11 Ukraine 2 0.6%
12 Japan 1 0.3%
13 Australia 1 0.3%