The rotary film evaporator with heat-conducting oil furnace is a new kind key equipment for the production of sodium sulfide.
导热油炉加热旋转薄膜蒸发器是一种新型的硫化碱生产的关键设备，它由导热油炉与旋转薄膜蒸发器两部分组成。
The rotary film evaporator with heat-conducting oil furnace is a new kind key equipment for the production of sodium sulfide.
导热油炉加热旋转薄膜蒸发器是一种新型的硫化碱生产的关键设备，它由导热油炉与旋转薄膜蒸发器两部分组成。
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