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 42 44.7%
2 United States 15 16%
3 Netherlands 10 10.6%
4 France 9 9.6%
5 Russia 7 7.4%
6 Taiwan 4 4.3%
7 Germany 3 3.2%
8 Czech Republic 2 2.1%
9 India 1 1.1%
10 Australia 1 1.1%