• 1. polycrystalline layer: 多结晶体层
• 2. polycrystalline silicon layer: 多硅晶体层 | 多晶硅层
• 3. layer polycrystalline: 多结晶体层

• 1.Obviously, the composition, structure and properties of the intermediate layer play an important role in some main properties of the sintered polycrystalline diamond.
  显然，这种中间层的组分、结构和性质对于烧结多晶金刚石的某些主要性质有着重要作用。
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• 2.The polycrystalline diamond (PCD) compact is composed of polycrystalline diamond layer and hard alloy layer.
  PCD复合片由聚晶金刚石层和硬质合金层组成。
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• 3.The polycrystalline silicon layer is formed on the oxide layer and used for serving as an upper electrode plate of the high-voltage capacitor.
  多晶硅层是形成于氧化层上，用以作为高压电容的上电极板。
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