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 146 47.4%
2 United States 96 31.2%
3 Germany 30 9.7%
4 Canada 25 8.1%
5 Netherlands 2 0.6%
6 Hong Kong 2 0.6%
7 Italy 2 0.6%
8 Japan 2 0.6%
9 Moldova, Republic of 1 0.3%
10 Singapore 1 0.3%
11 Taiwan 1 0.3%