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 182 57.1%
2 United States 56 17.6%
3 Germany 34 10.7%
4 Netherlands 28 8.8%
5 Canada 9 2.8%
6 France 2 0.6%
7 Singapore 2 0.6%
8 Iran, Islamic Republic of 2 0.6%
9 India 1 0.3%
10 Turkey 1 0.3%
11 United Kingdom 1 0.3%
12 Belarus 1 0.3%