The kind of heater enlaces the resistance heating wire around the isinglass board ( flat ).
云母板 ( 片 ) 加热器是将电阻发热丝缠绕在云母(片)上的一种电加热器件.
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英英释义
Noun
1. any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
