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 29 35.4%
2 United States 29 35.4%
3 Germany 9 11%
4 France 6 7.3%
5 Czech Republic 2 2.4%
6 Canada 1 1.2%
7 Hong Kong 1 1.2%
8 India 1 1.2%
9 Malaysia 1 1.2%
10 Netherlands 1 1.2%
11 Russia 1 1.2%
12 United Kingdom 1 1.2%