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 368 46.2%
2 China 202 25.3%
3 Germany 68 8.5%
4 Netherlands 63 7.9%
5 France 51 6.4%
6 Canada 13 1.6%
7 Hong Kong 10 1.3%
8 Portugal 7 0.9%
9 5 0.6%
10 Korea, Republic of 3 0.4%
11 Norway 3 0.4%
12 Singapore 2 0.3%
13 Japan 1 0.1%
14 Finland 1 0.1%