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 260 53.6%
2 United States 147 30.3%
3 Germany 37 7.6%
4 Canada 19 3.9%
5 Korea, Republic of 11 2.3%
6 Russia 3 0.6%
7 Mexico 2 0.4%
8 Hong Kong 2 0.4%
9 India 1 0.2%
10 Netherlands 1 0.2%
11 Singapore 1 0.2%
12 Taiwan 1 0.2%