The outer brade layer can execute the function of heat transmitting and radiating, to enhance the general intensity of the heating belt. It can also be earthed .
电热带外层的编织层能起到传热和散热的作用，提高电热带的整体强度，同时还能用作安全接地线。
The outer layer surfaces of the small unit strip-shaped and block-shaped heating films and the radiating passages are coated with insulating layers.
在这些小单元条、块发热薄膜和散热通道外层面涂敷有绝缘层。
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