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 148 54.2%
2 United States 51 18.7%
3 Germany 37 13.6%
4 Singapore 9 3.3%
5 Taiwan 8 2.9%
6 Italy 5 1.8%
7 Canada 3 1.1%
8 United Kingdom 3 1.1%
9 Japan 2 0.7%
10 Hong Kong 2 0.7%
11 France 2 0.7%
12 Korea, Republic of 1 0.4%
13 Moldova, Republic of 1 0.4%
14 Ukraine 1 0.4%