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 53 42.1%
2 United States 29 23%
3 Germany 11 8.7%
4 Netherlands 11 8.7%
5 Hong Kong 8 6.3%
6 Canada 4 3.2%
7 Taiwan 3 2.4%
8 Japan 2 1.6%
9 Korea, Republic of 1 0.8%
10 Australia 1 0.8%
11 Portugal 1 0.8%
12 Singapore 1 0.8%
13 Ukraine 1 0.8%