单词 | vacuum shelf dryer |
释义 | vacuum shelf dryer [`vak·yǝm `shelf´drī·ǝr] ENGINEERING A type of indirect batch dryer which generally consists of a vacuum-tight cubical or cylindrical chamber of cast-iron or steel plate, heated supporting shelves inside the chamber, a vacuum source, and a condenser; used extensively for drying pharmaceuticals, temperature- sensitive or easily oxidizable materials, and small batches of high-cost products where any product loss must be avoided. |
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