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 61 41.2%
2 United States 34 23%
3 Germany 15 10.1%
4 Hong Kong 13 8.8%
5 Netherlands 12 8.1%
6 Canada 4 2.7%
7 Japan 3 2%
8 France 3 2%
9 South Africa 2 1.4%
10 Taiwan 1 0.7%