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 351 66.5%
2 United States 94 17.8%
3 Germany 39 7.4%
4 Canada 15 2.8%
5 Hong Kong 9 1.7%
6 Korea, Republic of 4 0.8%
7 Israel 3 0.6%
8 Serbia 3 0.6%
9 Mali 2 0.4%
10 Australia 2 0.4%
11 France 1 0.2%
12 Malaysia 1 0.2%
13 Moldova, Republic of 1 0.2%
14 Philippines 1 0.2%
15 Thailand 1 0.2%
16 United Kingdom 1 0.2%