The vascularray was developed and the development of periderm was obvious.
维管射线发达，周皮发育明显。
2
This paper discusses the fundamentals of applying digital subtractive processing technique in intensifying images obtained by X-rayvascular angiography.
本文论述了利用数字相减处理技术增强血管造影X线影象的基本原理。
3
In the X-Ray angiogram, the precise estimation of vascular centerlines and widths is very important for the quantitative and visualized diagnosis of blood vessel disease.