It is suggested that directionalgrowth of pollen tubes are controlled by molecular signal in ovule.
实验结果说明花粉管的定向生长受胚珠的分子信号调控。
2
The interface structure of composite consists of core material diffusion layer, chilling solidified layer, directionalgrowth layer, and cellular granular layer.
复合材料界面结构由芯材扩散层、激冷凝固层、方向性生长层和胞状晶粒层组成。
3
The sequence shows the directional compositional evolution of granitoids in a collisional orogen, which illustrates the vertical and lateral crust growth and the enhancement of crustal maturity.