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 176 62.2%
2 United States 51 18%
3 Germany 39 13.8%
4 Taiwan 4 1.4%
5 Canada 3 1.1%
6 Hong Kong 2 0.7%
7 Korea, Republic of 2 0.7%
8 Netherlands 2 0.7%
9 Norway 1 0.4%
10 Slovenia 1 0.4%
11 Turkey 1 0.4%
12 Ukraine 1 0.4%