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ＤＪＲ－７型等离子加热器是一种热梯度大，功率密度高的经济实用的加热装置主要用于加热切削。本文介绍所开发的小型等离子加热器的设计原理、技术特征，并通过实例表明它具有广阔的推广应用价值。
DJR-7 plasma heater is a large thermal gradient, high power density and economical heating device is mainly used for heating cutting. This article introduces the design principle and technical characteristics of the developed small plasma heater, and shows that it has broad application value by examples.