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 64 46%
2 United States 20 14.4%
3 Netherlands 16 11.5%
4 France 11 7.9%
5 Germany 11 7.9%
6 Canada 4 2.9%
7 Russia 4 2.9%
8 Korea, Republic of 3 2.2%
9 Malaysia 2 1.4%
10 Hong Kong 2 1.4%
11 Brazil 1 0.7%
12 Ukraine 1 0.7%