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 125 52.7%
2 United States 66 27.8%
3 Germany 13 5.5%
4 Hong Kong 8 3.4%
5 Netherlands 8 3.4%
6 Canada 7 3%
7 Russia 2 0.8%
8 Singapore 2 0.8%
9 United Kingdom 2 0.8%
10 Portugal 1 0.4%
11 France 1 0.4%
12 Japan 1 0.4%
13 Korea, Republic of 1 0.4%