preimpregnating insulation
... 预浸渍绝缘纸：pre impregnated insulation 预浸渍绝缘：preimpregnating insulation 预浸渍的：preimpregnated ...
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预浸渍绝缘纸 pre impregnated insulation
预浸渍纸绝缘 pre-impregnated paper insulation
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