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 61 71.8%
2 United States 8 9.4%
3 Germany 6 7.1%
4 Russia 3 3.5%
5 Czech Republic 2 2.4%
6 Australia 1 1.2%
7 Hong Kong 1 1.2%
8 Japan 1 1.2%
9 Korea, Republic of 1 1.2%
10 Macao 1 1.2%