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 190 58.3%
2 United States 53 16.3%
3 Germany 45 13.8%
4 Canada 14 4.3%
5 Netherlands 10 3.1%
6 Hong Kong 4 1.2%
7 France 3 0.9%
8 Russia 2 0.6%
9 Ukraine 1 0.3%
10 Brazil 1 0.3%
11 India 1 0.3%
12 Israel 1 0.3%
13 Moldova, Republic of 1 0.3%