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 25 35.2%
2 United States 15 21.1%
3 Germany 12 16.9%
4 Netherlands 11 15.5%
5 Canada 2 2.8%
6 Hong Kong 2 2.8%
7 France 2 2.8%
8 Moldova, Republic of 1 1.4%
9 Turkey 1 1.4%