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 70 37.2%
2 United States 38 20.2%
3 Netherlands 29 15.4%
4 Germany 19 10.1%
5 France 13 6.9%
6 Hong Kong 6 3.2%
7 Japan 3 1.6%
8 Czech Republic 3 1.6%
9 Canada 2 1.1%
10 India 2 1.1%
11 Australia 1 0.5%
12 Norway 1 0.5%
13 Taiwan 1 0.5%