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 44 47.8%
2 United States 20 21.7%
3 Netherlands 10 10.9%
4 Canada 6 6.5%
5 Malaysia 4 4.3%
6 Russia 2 2.2%
7 Germany 2 2.2%
8 Hong Kong 2 2.2%
9 Korea, Republic of 1 1.1%
10 Spain 1 1.1%