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 240 73.4%
2 United States 41 12.5%
3 Germany 37 11.3%
4 Netherlands 2 0.6%
5 Australia 2 0.6%
6 Brazil 1 0.3%
7 Bulgaria 1 0.3%
8 France 1 0.3%
9 Singapore 1 0.3%
10 Moldova, Republic of 1 0.3%