The ratio of working time to standby unattended time of the tubular electric heating elements is less than 1 when the tubular electric heating elements work at interval.
所述电热管间隔工作时电热管的工作时间和非工作时间的比值小于1。
Optimization of far infrared heating elements and design of electric furnaces using the elements are stated, and examples are given.
本文着重阐述了远红外加热元件的优选方法和电炉设计步骤，并列举了实例。
It is one of domestic electric heating elements manufacturers that are of certain scale.
是国内具有一定规模的电热元件生产厂家之一。
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