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 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 .
产品全部为高原型，其绝缘强度、运输要求、散热条件、外观等均经过大量研究，能充分满足高原地区的运行要求。
The product is plateau type. Its insulation strength, transportation requirement, radiation condition and overall appearance can sufficiently meet the operation requirement in plateau area.
结果表明，封闭式纵向翅片管的散热量、金属热强度以及自然对流换热系数都要高于开放式翅片管。
As a result, heat dissipating capacity, metal thermal intensity and free convection heat transfer coefficient of the longitudinal closed finned tube are higher than those of the open finned tube.
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