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 191 52.8%
2 United States 109 30.1%
3 Germany 38 10.5%
4 Hong Kong 7 1.9%
5 Netherlands 4 1.1%
6 Norway 2 0.6%
7 Singapore 2 0.6%
8 Spain 2 0.6%
9 Japan 2 0.6%
10 Canada 2 0.6%
11 Australia 1 0.3%
12 Austria 1 0.3%
13 Turkmenistan 1 0.3%