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 42.3%
2 United States 36 23.1%
3 Netherlands 15 9.6%
4 Russia 8 5.1%
5 Canada 8 5.1%
6 Singapore 6 3.8%
7 Germany 6 3.8%
8 Hong Kong 4 2.6%
9 Malaysia 3 1.9%
10 Taiwan 2 1.3%
11 Portugal 1 0.6%
12 France 1 0.6%