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 187 57.4%
2 United States 52 16%
3 Germany 42 12.9%
4 Netherlands 25 7.7%
5 Russia 6 1.8%
6 Canada 4 1.2%
7 United Kingdom 4 1.2%
8 Australia 2 0.6%
9 Hong Kong 2 0.6%
10 Ukraine 1 0.3%
11 France 1 0.3%