The insulating material is placed in the opening so that the insulating material at least partially insulates the layer comprising the approximately horizontal or inclined part of the first heater.
将隔离材料放在所述开口中，以便使所述隔离材料至少部分地隔离第一加热器的大体水平或倾斜部分所位于的该层；
The insulating material is placed in the opening so that the insulating material at least partially insulates the layer comprising the approximately horizontal or inclined part of the first heater.
将隔离材料放在所述开口中，以便使所述隔离材料至少部分地隔离第一加热器的大体水平或倾斜部分所位于的该层；
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