BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 39 39.4%
2 United States 29 29.3%
3 Germany 15 15.2%
4 Canada 5 5.1%
5 Taiwan 4 4%
6 Hong Kong 3 3%
7 Moldova, Republic of 1 1%
8 Portugal 1 1%
9 Ukraine 1 1%
10 France 1 1%