溜放粘结性矿料时常会出现两类放矿障碍，一类是稳定粘结拱卡堵，另一类是形成管状流动。
There are two kinds of hindrances to cohesive ores during ore drawing. One of them is stable stick arch and the other rathole flow.
方法：用磁共振相位对比电影法测定模拟脑血液流动的管状模型稳态流动下流体信号强度，并与相应的速率进行相关性分析后分别得出相应的转换函数关系。
Methods: tube flow phantoms which simulating the cerebral blood flow were established. Flow signal intensity of the steady flow in tubes was measured by MR phase-contrast cine technique.
圆管状间隙（S1）在 放置在中空段内的管状电极与中空段的内周壁（14）之间形成，电镀液在该 间隙（S1）中流动。
A circular tube-like gap (S1) in which a plating liquid (17) flows is formed between the tubular electrode placed in the hollow section and an inner peripheral wall (14) of the hollow section.
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