magnesium oxide filament
... 氧化镁的 magnesian 氧化镁丝 magnesium oxide filament 游离氧化镁 f-MgO ...
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电热管用U型钢管，烧结氧化镁和电热丝制成，直接浸在水里热能损耗少。
The electrical heating tube is made of U shaped steel tube, sintered magnesia and heating wire. It is immersed directly in the water for preventing heat loss.
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