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 62 43.4%
2 United States 37 25.9%
3 Netherlands 18 12.6%
4 France 8 5.6%
5 Germany 6 4.2%
6 Czech Republic 4 2.8%
7 Russia 3 2.1%
8 Canada 2 1.4%
9 Bahrain 1 0.7%
10 Ukraine 1 0.7%
11 Hong Kong 1 0.7%