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 81 52.6%
2 United States 38 24.7%
3 Germany 13 8.4%
4 Hong Kong 5 3.2%
5 United Kingdom 5 3.2%
6 Canada 3 1.9%
7 Taiwan 3 1.9%
8 Ukraine 1 0.6%
9 Australia 1 0.6%
10 Belgium 1 0.6%
11 Korea, Republic of 1 0.6%
12 Portugal 1 0.6%
13 Singapore 1 0.6%