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 208 59.6%
2 United States 66 18.9%
3 Germany 40 11.5%
4 Canada 23 6.6%
5 Taiwan 3 0.9%
6 Russia 2 0.6%
7 Hong Kong 2 0.6%
8 India 2 0.6%
9 Moldova, Republic of 1 0.3%
10 Netherlands 1 0.3%
11 Bulgaria 1 0.3%