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 175 63.4%
2 United States 49 17.8%
3 Germany 30 10.9%
4 Netherlands 8 2.9%
5 Russia 5 1.8%
6 Singapore 2 0.7%
7 Spain 2 0.7%
8 Brazil 2 0.7%
9 United Kingdom 1 0.4%
10 Norway 1 0.4%
11 India 1 0.4%