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 225 65.6%
2 United States 56 16.3%
3 Germany 32 9.3%
4 Canada 12 3.5%
5 Hong Kong 5 1.5%
6 Taiwan 4 1.2%
7 Czech Republic 2 0.6%
8 France 2 0.6%
9 Oman 2 0.6%
10 Russia 1 0.3%
11 Slovenia 1 0.3%
12 Switzerland 1 0.3%