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 236 63.4%
2 Germany 43 11.6%
3 United States 42 11.3%
4 Netherlands 30 8.1%
5 Singapore 9 2.4%
6 Canada 3 0.8%
7 Hong Kong 3 0.8%
8 India 2 0.5%
9 Ukraine 2 0.5%
10 Australia 1 0.3%
11 Poland 1 0.3%