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 239 44.6%
2 United States 211 39.4%
3 Germany 33 6.2%
4 Taiwan 19 3.5%
5 Canada 16 3%
6 France 4 0.7%
7 Singapore 4 0.7%
8 Ukraine 2 0.4%
9 Pakistan 2 0.4%
10 Netherlands 2 0.4%
11 Norway 1 0.2%
12 1 0.2%
13 Colombia 1 0.2%
14 Turkey 1 0.2%