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 43 42.6%
2 United States 22 21.8%
3 Netherlands 13 12.9%
4 France 7 6.9%
5 Czech Republic 4 4%
6 Australia 3 3%
7 Canada 2 2%
8 Congo, The Democratic Republic of The 2 2%
9 Hong Kong 2 2%
10 New Zealand 2 2%
11 Singapore 1 1%