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| 同位素测厚仪 (【技】由放射源、检测器和指示器等组成的一种测厚仪器。当片状待测物从放射源和检测器之间通过时，由于不同质量和厚度的物质对辐射线的阻挡程度不同，从而即可确定被测物质的厚度。) | |||
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