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 32 29.4%
2 United States 28 25.7%
3 Netherlands 15 13.8%
4 Germany 10 9.2%
5 Hong Kong 5 4.6%
6 France 4 3.7%
7 Taiwan 4 3.7%
8 Czech Republic 3 2.8%
9 Russia 3 2.8%
10 Canada 2 1.8%
11 Malaysia 2 1.8%
12 India 1 0.9%