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 65 46.4%
2 United States 31 22.1%
3 Netherlands 17 12.1%
4 France 10 7.1%
5 Germany 6 4.3%
6 Czech Republic 4 2.9%
7 Canada 3 2.1%
8 Russia 2 1.4%
9 Ukraine 1 0.7%
10 Hong Kong 1 0.7%