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 66 48.2%
2 United States 32 23.4%
3 Netherlands 19 13.9%
4 Russia 3 2.2%
5 Singapore 3 2.2%
6 Canada 3 2.2%
7 Taiwan 2 1.5%
8 Czech Republic 2 1.5%
9 France 2 1.5%
10 Germany 2 1.5%
11 Hong Kong 2 1.5%
12 Malaysia 1 0.7%