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 56 42.4%
2 United States 32 24.2%
3 Germany 25 18.9%
4 Canada 5 3.8%
5 Taiwan 4 3%
6 Hong Kong 3 2.3%
7 2 1.5%
8 Czech Republic 1 0.8%
9 Netherlands 1 0.8%
10 Portugal 1 0.8%
11 Russia 1 0.8%
12 Ukraine 1 0.8%