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 44.9%
2 United States 182 39.3%
3 Germany 39 8.4%
4 Canada 17 3.7%
5 Netherlands 4 0.9%
6 Moldova, Republic of 3 0.6%
7 India 3 0.6%
8 Mexico 2 0.4%
9 Belgium 2 0.4%
10 Austria 1 0.2%
11 Hong Kong 1 0.2%
12 Japan 1 0.2%