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 160 55.2%
2 United States 72 24.8%
3 Germany 33 11.4%
4 Canada 15 5.2%
5 Brazil 2 0.7%
6 Netherlands 2 0.7%
7 Norway 2 0.7%
8 Russia 1 0.3%
9 Singapore 1 0.3%
10 Switzerland 1 0.3%
11 1 0.3%