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 337 59.2%
2 United States 130 22.8%
3 Germany 48 8.4%
4 Netherlands 31 5.4%
5 Singapore 10 1.8%
6 Hong Kong 4 0.7%
7 Korea, Republic of 2 0.4%
8 Sweden 2 0.4%
9 Taiwan 1 0.2%
10 Ukraine 1 0.2%
11 United Kingdom 1 0.2%
12 Moldova, Republic of 1 0.2%
13 Canada 1 0.2%