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 41 33.1%
2 United States 35 28.2%
3 Netherlands 20 16.1%
4 Taiwan 8 6.5%
5 Germany 6 4.8%
6 Russia 5 4%
7 Canada 4 3.2%
8 Australia 3 2.4%
9 South Africa 1 0.8%
10 New Zealand 1 0.8%