用作微结构分析的原状粘土试样,如果通过大气或烘箱进行干燥处理时,会造成样品收缩和內部结构的较大扰动。水文地质工程地质研究所针对苏产装置制样时间太长的弊端,在无参考资料的情况下,通过反复设计、试制,发现使用湿度梯度和真空升华相结合的系统能使制样时间大大缩 For undisturbed clay samples used for microstructure analysis, large shrinkage and internal turbulence of the sample results if the sample is dried in the air or in an oven. In view of the shortcomings of too long sample preparation time of the Soviet-made production plant, the hydrogeological engineering and geology research institute redesigned and prototyped without reference materials and found that the system using the combination of humidity gradient and vacuum sublimation can greatly reduce the sample preparation time