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 274 88.7%
2 United States 10 3.2%
3 Netherlands 8 2.6%
4 Germany 6 1.9%
5 Taiwan 3 1%
6 Hong Kong 2 0.6%
7 India 1 0.3%
8 Japan 1 0.3%
9 Korea, Republic of 1 0.3%
10 South Africa 1 0.3%
11 Brazil 1 0.3%
12 Canada 1 0.3%