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 148 66.4%
2 United States 35 15.7%
3 Netherlands 11 4.9%
4 Germany 10 4.5%
5 Canada 8 3.6%
6 Singapore 4 1.8%
7 Hong Kong 4 1.8%
8 Japan 1 0.4%
9 Moldova, Republic of 1 0.4%
10 Ukraine 1 0.4%