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 56 48.3%
2 United States 27 23.3%
3 Netherlands 9 7.8%
4 Germany 7 6%
5 France 6 5.2%
6 Singapore 3 2.6%
7 Czech Republic 2 1.7%
8 Japan 2 1.7%
9 Moldova, Republic of 1 0.9%
10 India 1 0.9%
11 Canada 1 0.9%
12 United Kingdom 1 0.9%