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 107 64.8%
2 Germany 22 13.3%
3 United States 13 7.9%
4 Canada 6 3.6%
5 Ireland 3 1.8%
6 Moldova, Republic of 3 1.8%
7 Singapore 2 1.2%
8 Japan 2 1.2%
9 Greece 2 1.2%
10 France 2 1.2%
11 Brazil 1 0.6%
12 Hong Kong 1 0.6%
13 Malaysia 1 0.6%