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 23 41.1%
2 United States 11 19.6%
3 Germany 9 16.1%
4 Netherlands 4 7.1%
5 Malaysia 2 3.6%
6 Australia 2 3.6%
7 Canada 2 3.6%
8 Czech Republic 1 1.8%
9 France 1 1.8%
10 Hong Kong 1 1.8%