Vessel elements are the main feature distinguishing the "hardwood" of angiosperms from the "softwood" of conifers.
Vessel elements are the main feature distinguishing the "hardwood" of angiosperms from the "softwood" of conifers.
Vessel elements are the main feature distinguishing the "hardwood" of angiosperms from the "softwood" of conifers.
使用更简单的措辞: Vessel elements are the main feature distinguishing the "hardwood" of angiosperms from the "softwood" of conifers. 输出: