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 United States 139 47.1%
2 China 101 34.2%
3 Netherlands 19 6.4%
4 Germany 9 3.1%
5 Hong Kong 7 2.4%
6 Russia 7 2.4%
7 Korea, Republic of 6 2%
8 Singapore 2 0.7%
9 France 2 0.7%
10 India 1 0.3%
11 Ukraine 1 0.3%
12 United Kingdom 1 0.3%