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 148 43.1%
2 United States 107 31.2%
3 Canada 39 11.4%
4 Germany 33 9.6%
5 Netherlands 4 1.2%
6 Spain 3 0.9%
7 Switzerland 2 0.6%
8 Ukraine 2 0.6%
9 Hong Kong 2 0.6%
10 Malaysia 1 0.3%
11 Moldova, Republic of 1 0.3%
12 Australia 1 0.3%