There we are in Phase D, in something like, perhaps, persistent vegetative state.
这就是D阶段，可以叫做，持续植物人状态。
2
Vegetative propagation is widely used in forestry, however, the maturation that due to phase changes during tree development is a huge obstacle.
无性繁殖在林业中应用很普遍，而由树木发育阶段转变带来的成熟效应问题，一直是无性系造林的障碍。
3
Studies were made on the vegetative propagation coefficient and cormels biological characters using eighth-excision in different development phase of Lycoris radiate.