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 261 66.1%
2 United States 53 13.4%
3 Germany 43 10.9%
4 Singapore 15 3.8%
5 Hong Kong 10 2.5%
6 Russia 4 1%
7 Canada 2 0.5%
8 Ukraine 2 0.5%
9 South Africa 1 0.3%
10 Viet Nam 1 0.3%
11 France 1 0.3%
12 Japan 1 0.3%
13 Mexico 1 0.3%