本文介绍了反射法测量石英管外径及壁厚的原理和方法。
A new reflection method to measure the external diameter and the thickness distribution of the quartz tube is described in this paper.
NKK开发了利用表面波检测钢管外径的手提式检测装置。
NKK has developed a portable measuring equipment to measure the o.
本文研究了螺旋纸管(罐身)各参数之间，以及皮带轮直径和最大纸管外径之间的关系。
In this paper, the relations between the parameters of the spiral wound paper tubes and between the diameter of the pulleys and the maximum outer diameter of the paper tubes have been studied.
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