... 封闭仪器，密封仪器 enclosed instrument 封闭式刀闸，铁壳开关 enclosed knife switch 孤立介质 enclosed medium ...
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Medium temperature box adopts enclosed fire pot. The spiral heating component made by electric heated alloy wire coil all around of furnace pot. It has functions of evenly loss heat and long use life.
中温箱式采用封闭型炉膛，以电热合金丝为发热元件制成螺旋形后盘绕于炉膛四壁之中，散热时炉温均匀，延长了使用寿命。
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