AIM: to observe the changes of ambulatory blood pressure and morphology of resistancevessel in spontaneously hypertensive rats (SHR) at different weeks of ages.
目的：观察不同周龄自发性高血压大鼠(SHR)动态血压变化及阻力血管形态。
2
The fatigue resistance of the scarf weld in the end of the vessel is stronger than that of the butt weld.
其端部斜面焊缝结构的抗疲劳强度比对接焊缝结构高，且不会发生一次性脆性破坏；
3
Conclution: The functions of this medicine were expansion of periphery blood vessel and reduction its resistance, increase in myocardium contractive force and in cardiac out put.