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 54 40%
2 United States 44 32.6%
3 Germany 12 8.9%
4 Netherlands 6 4.4%
5 Australia 6 4.4%
6 Hong Kong 4 3%
7 Russia 2 1.5%
8 Taiwan 2 1.5%
9 Singapore 1 0.7%
10 Czech Republic 1 0.7%
11 France 1 0.7%
12 Japan 1 0.7%
13 Malaysia 1 0.7%