BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 32 33.3%
2 United States 28 29.2%
3 Germany 16 16.7%
4 Canada 7 7.3%
5 Taiwan 4 4.2%
6 Hong Kong 4 4.2%
7 Russia 2 2.1%
8 Portugal 1 1%
9 Czech Republic 1 1%
10 France 1 1%