BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 42 32.8%
2 United States 24 18.8%
3 Netherlands 17 13.3%
4 France 10 7.8%
5 Germany 10 7.8%
6 Korea, Republic of 8 6.2%
7 Hong Kong 6 4.7%
8 Canada 4 3.1%
9 Singapore 3 2.3%
10 Turkey 2 1.6%
11 Japan 2 1.6%