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 170 55.6%
2 United States 71 23.2%
3 Germany 31 10.1%
4 Hong Kong 10 3.3%
5 Canada 9 2.9%
6 Japan 5 1.6%
7 Netherlands 4 1.3%
8 Switzerland 2 0.7%
9 Taiwan 1 0.3%
10 Ukraine 1 0.3%
11 New Zealand 1 0.3%
12 Singapore 1 0.3%