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 United States 37 31.9%
2 China 33 28.4%
3 Canada 15 12.9%
4 Germany 13 11.2%
5 Netherlands 5 4.3%
6 Hong Kong 3 2.6%
7 Taiwan 3 2.6%
8 Czech Republic 2 1.7%
9 France 1 0.9%
10 1 0.9%
11 Japan 1 0.9%
12 Portugal 1 0.9%
13 Ukraine 1 0.9%