Maximize the number of parts processed per load. The more parts in a machine load, the better the capability to overcome incoming part-to-part thickness variation and total thickness variation (TTV).
使每次抛光过程中砂轮所接触的产品部分总面积达到最大，这样的话，就能更好地克服抛光产品的各部分厚度变化和总体厚度变化（即TTV）。
The variations of crystal thickness and refractive index will lead to a shift of synchronous Angle of Attenuated Total Reflection (ATR) spectrum, and then bring reflectance variation.
晶体厚度和折射率的变化导致衰减全反射(atr)谱的同步角发生移动，进而引起反射率的变化。
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