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 247 59.7%
2 United States 71 17.1%
3 Germany 40 9.7%
4 Netherlands 30 7.2%
5 Hong Kong 7 1.7%
6 Moldova, Republic of 6 1.4%
7 Taiwan 4 1%
8 Canada 4 1%
9 Iran, Islamic Republic of 2 0.5%
10 Japan 1 0.2%
11 Australia 1 0.2%
12 Turkey 1 0.2%