结果表明，当布风管间距与布风管外径比为3.2时，管式布风流化床比板式布风具有更好的混合效果。
Experiments showed that mixing property in pipe fluidized bed with relative distance of blowpipe equal to 3.2 is better than that of traditional platefluidized bed.
为了分析管道厚度对电容传感器的作用，定义了径极比（传感器管道内径与外径之比）的概念。
In order to analyze the effect of pipeline thickness on ECT sensor, radius-electrode ratio is defined as the ratio of inner radius and outer radius.
既然铁氟龙以及聚乙烯之导管内径比金属导体的外径大出许多，因此金属导体仅接触到单一的导管，导体几乎受到空气完美隔离。
Since the inner diameter of the Teflon and PE tubes is much larger than the outer diameter of the metal conductor, the metal only touches the tubes in a single line.
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