占多大比例 英语怎么说?原句是这两个因素各自占多大比例仍然需要进一步研究.

at what percentage

percentage就可以吧
The percentage of these two factors still need futher study.

按你说的格式,what percentage _______take(s) up .what percentage________account(s) for .what percentage________occupies/occupy.what percentage________hold(s).what percentage________make(s) up.都可以的,...