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 47 45.2%
2 United States 20 19.2%
3 Germany 18 17.3%
4 France 5 4.8%
5 Netherlands 4 3.8%
6 Canada 3 2.9%
7 Malaysia 3 2.9%
8 Czech Republic 1 1%
9 Turkey 1 1%
10 Hong Kong 1 1%
11 Japan 1 1%