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正翻译步骤 7

步骤 7
So, what changed this year? First, the transparent switch cover material. The cover in the 2018 model is semi-opaque, somewhat tacky, and feels like silicone. The new model is clearer and smooth to the touch. To confirm that the materials are indeed different, we analyzed them using Fourier Transform Infrared (FTIR) spectroscopy. Thanks to Eric Beaton and Cal Poly's Materials Engineering department for their equipment and expertise!
  • So, what changed this year? First, the transparent switch cover material.

  • The cover in the 2018 model is semi-opaque, somewhat tacky, and feels like silicone. The new model is clearer and smooth to the touch.

  • To confirm that the materials are indeed different, we analyzed them using Fourier Transform Infrared (FTIR) spectroscopy. Thanks to Eric Beaton and Cal Poly's Materials Engineering department for their equipment and expertise!

  • FTIR analysis works by shining infrared light at a material and measuring how much light is absorbed and at what wavelengths. This data acts like a fingerprint that can be used to identify the material.

  • The differing peaks and valleys on the FTIR spectra for the two samples show us that they are different materials. But what are they?

  • When comparing these FTIR spectra to that of known polymers, the closest match for the 2018 model is either poly(acetylene) with aromatic urethane side groups, or a type of TPU (which seems more likely). The 2019 model is a match for polyamide (commonly known as nylon).

  • What this doesn't tell us is, just what problem Apple's engineers tried to solve using this updated material. Send us your ideas!

所以,今年改进了什么地方?首先,就是透明护盖的材料。

2018款蝶式键盘中,这个零件的制造材料并不是透明的,有些发粘,甚至像硅胶一样粘。新款的键盘里,这个零件更加透明,摸起来更加光滑了。

为了确认两种材料完全不一样,我们使用傅氏转换红外线光谱分析仪分析了这两个零件。特别鸣谢Eric Beaton和Cal Poly的材料工程部门的设备和专业知识!

傅氏转换红外线光谱分析通过用红外线光束照射材料和测量材料在是什么波长上吸收了多少光线来得出结论。这个数据就像指纹一样独一无二,从而能够区分不同的材料。

两个材料样本的光谱不同的波峰和波谷显示,它们是不同的材料,但是它们是什么材料呢?

在把光谱与已知的聚合物材料对比以后,与2018款最匹配的材料的既不是芳香族聚氨酯,也不是一种TPU材料(当然,更接近TPU一些);与2019款最匹配的是聚酰胺(尼龙一类的东西 )。

这些结果没有告诉我们的是,Apple工程师通过改变材料想要解决的是什么问题。请告诉我们你的点子吧!

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