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 346 70.9%
2 United States 71 14.5%
3 Germany 43 8.8%
4 Hong Kong 7 1.4%
5 Taiwan 5 1%
6 Canada 2 0.4%
7 Slovakia 2 0.4%
8 United Kingdom 2 0.4%
9 India 2 0.4%
10 Israel 2 0.4%
11 Japan 2 0.4%
12 Malaysia 1 0.2%
13 France 1 0.2%
14 Ireland 1 0.2%
15 Ukraine 1 0.2%