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 36 40.4%
2 United States 23 25.8%
3 Germany 15 16.9%
4 Canada 5 5.6%
5 Hong Kong 3 3.4%
6 Korea, Republic of 2 2.2%
7 Malaysia 1 1.1%
8 Portugal 1 1.1%
9 Ukraine 1 1.1%
10 1 1.1%
11 France 1 1.1%