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 25 28.1%
2 United States 24 27%
3 Germany 19 21.3%
4 Netherlands 10 11.2%
5 France 3 3.4%
6 Italy 2 2.2%
7 United Kingdom 2 2.2%
8 Korea, Republic of 1 1.1%
9 Saudi Arabia 1 1.1%
10 Singapore 1 1.1%
11 India 1 1.1%