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 166 45.6%
2 United States 121 33.2%
3 Germany 39 10.7%
4 Canada 19 5.2%
5 Russia 5 1.4%
6 Australia 3 0.8%
7 Japan 3 0.8%
8 Macao 2 0.5%
9 Hong Kong 2 0.5%
10 Ireland 1 0.3%
11 Netherlands 1 0.3%
12 Czech Republic 1 0.3%
13 Ukraine 1 0.3%