Often, you will only need this in the coldest weather, when the fleece adds extra insulation between your base layer and your outer layer.

通常你只会在最冷的天气才需要这个，羊毛会在你的底层和外套之间增加一个额外的隔绝层。

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The economical model of pipeline insulation is divided into single layer structure and double layer structure types.

保温管道的经济模型分为单层结构和双层结构两种。

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The next layer is the insulation layer.

下一个层是绝缘层。

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And because the gate and the insulation layer are formed right at the end of the chip-making process, after the high-temperature steps have been completed, it is possible to choose from a wider range of materials for the insulation layer.

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