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 38 53.5%
2 United States 12 16.9%
3 Germany 9 12.7%
4 Netherlands 5 7%
5 Moldova, Republic of 2 2.8%
6 Hong Kong 2 2.8%
7 Malaysia 1 1.4%
8 Czech Republic 1 1.4%
9 France 1 1.4%