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 147 62.8%
2 United States 43 18.4%
3 Germany 20 8.5%
4 Japan 6 2.6%
5 Canada 3 1.3%
6 2 0.9%
7 Czech Republic 2 0.9%
8 Korea, Republic of 2 0.9%
9 Malaysia 2 0.9%
10 Greece 2 0.9%
11 Hong Kong 2 0.9%
12 Thailand 2 0.9%
13 Singapore 1 0.4%