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 153 61.2%
2 United States 39 15.6%
3 Germany 38 15.2%
4 Canada 3 1.2%
5 Czech Republic 3 1.2%
6 Romania 3 1.2%
7 Singapore 2 0.8%
8 Finland 2 0.8%
9 Malaysia 2 0.8%
10 Hong Kong 1 0.4%
11 France 1 0.4%
12 Denmark 1 0.4%
13 Ukraine 1 0.4%
14 Russia 1 0.4%