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 88 59.5%
2 United States 23 15.5%
3 Netherlands 14 9.5%
4 Germany 5 3.4%
5 Korea, Republic of 5 3.4%
6 Singapore 4 2.7%
7 Taiwan 2 1.4%
8 Brazil 2 1.4%
9 Japan 2 1.4%
10 Canada 1 0.7%
11 Hong Kong 1 0.7%
12 Ukraine 1 0.7%