What does a dielectric liner means?

[Cate]

hello every body,
can someone please tell me what a dielectric liner means?
thanks.

[OxfordBlues]

This is a technical term related to a specific field, but as a clue, the prefix 'di-' in English means 'two'.

Also remember that means = does + mean, so you only need one 's'. You already have the 's' in does, so don't put a second 's' in means.
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