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 191 64.1%
2 United States 46 15.4%
3 Germany 35 11.7%
4 Canada 13 4.4%
5 Netherlands 3 1%
6 Russia 3 1%
7 Singapore 2 0.7%
8 Japan 2 0.7%
9 Moldova, Republic of 1 0.3%
10 Hong Kong 1 0.3%
11 Taiwan 1 0.3%