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 United States 33 34.7%
2 China 23 24.2%
3 Germany 19 20%
4 Canada 5 5.3%
5 Taiwan 4 4.2%
6 Netherlands 3 3.2%
7 Hong Kong 3 3.2%
8 Korea, Republic of 1 1.1%
9 Latvia 1 1.1%
10 Portugal 1 1.1%
11 Russia 1 1.1%
12 Ukraine 1 1.1%