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 193 62.1%
2 United States 57 18.3%
3 Germany 38 12.2%
4 Canada 12 3.9%
5 Russia 3 1%
6 South Africa 3 1%
7 Hong Kong 2 0.6%
8 Netherlands 1 0.3%
9 Ukraine 1 0.3%
10 Singapore 1 0.3%