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 177 55.8%
2 United States 74 23.3%
3 Germany 32 10.1%
4 Canada 17 5.4%
5 Hong Kong 4 1.3%
6 Cambodia 3 0.9%
7 Brazil 2 0.6%
8 Czech Republic 2 0.6%
9 Hungary 2 0.6%
10 Netherlands 2 0.6%
11 Russia 2 0.6%