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释义
the world > matter > physics > electromagnetic radiation > electricity > transmission of electricity, conduction > non-conduction, insulation > [noun] > substance or contrivance > of specific kind (3)
press-board1849

A board on or against which cloth or clothing may be pressed or ironed; spec. a small padded board used when sewing.

nigrite1882

An electrical insulating material composed of ozocerite and rubber. Obsolete. rare.

Micarta1912

Originally: a laminated electrical insulating material consisting of paper, mica, and enamel. Later also: a similar material composed of layers…

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更新时间:2024/9/21 1:21:45