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 76 42.2%
2 United States 61 33.9%
3 Netherlands 17 9.4%
4 Germany 10 5.6%
5 Korea, Republic of 7 3.9%
6 Hong Kong 3 1.7%
7 Nigeria 2 1.1%
8 Spain 1 0.6%
9 New Zealand 1 0.6%
10 Malaysia 1 0.6%
11 Australia 1 0.6%