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 514 55%
2 United States 144 15.4%
3 Netherlands 140 15%
4 France 48 5.1%
5 Germany 35 3.7%
6 Canada 15 1.6%
7 Korea, Republic of 11 1.2%
8 Russia 8 0.9%
9 India 8 0.9%
10 Hong Kong 5 0.5%
11 Ukraine 3 0.3%
12 Pakistan 1 0.1%
13 Belarus 1 0.1%
14 Brazil 1 0.1%