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 175 44.6%
2 China 135 34.4%
3 Germany 31 7.9%
4 Canada 24 6.1%
5 Hong Kong 10 2.6%
6 Singapore 6 1.5%
7 Taiwan 5 1.3%
8 Netherlands 2 0.5%
9 Romania 1 0.3%
10 Spain 1 0.3%
11 India 1 0.3%
12 Japan 1 0.3%