Ammonium chloride vaporizes on heating, and sublimes back to a solid on cooling. 氯化铵受热蒸发,升华,冷却还原为固体。
Vacuum-freezing and drying technique is a developed and new technique, by which the material of containing water is froze at low-temperature state, then the ice sublimes and turns vapor directly, water is lost when the vapor exhausts so the material turns dry. 真空冷冻干燥技术是将含水物料在低温状态下冻结,然后在真空条件下,使冰直接升华成水蒸气并排掉脱水物料中的水分使物料干燥的一门高新技术。
This thesis builds up the banner of the advance of The Chinese Communist Party inwardly and mentally, and sublimes the cultural guide of Marxist. CULTURE 这一论断,树起了党在思想上精神上保持先进性的旗帜,升华了马克思主义的文化导向论