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 55 43.3%
2 United States 32 25.2%
3 Netherlands 15 11.8%
4 France 8 6.3%
5 Germany 4 3.1%
6 Hong Kong 4 3.1%
7 Japan 3 2.4%
8 Russia 2 1.6%
9 Canada 2 1.6%
10 Taiwan 1 0.8%
11 Czech Republic 1 0.8%