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 30 31.9%
2 United States 22 23.4%
3 Netherlands 13 13.8%
4 Taiwan 7 7.4%
5 Korea, Republic of 5 5.3%
6 Russia 4 4.3%
7 France 4 4.3%
8 Canada 3 3.2%
9 Italy 2 2.1%
10 Czech Republic 2 2.1%
11 Hong Kong 1 1.1%
12 Ukraine 1 1.1%