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 64 63.4%
2 Germany 11 10.9%
3 United States 9 8.9%
4 Taiwan 5 5%
5 Australia 2 2%
6 Switzerland 2 2%
7 India 2 2%
8 Japan 2 2%
9 Netherlands 1 1%
10 Singapore 1 1%
11 Hong Kong 1 1%
12 France 1 1%