本文介绍一种测定不能进行机械加工的“固体材料”（农产品或矿物）微波介电特性的新方法。将这类材料研碎，成为“空气－粒子”混合物，应用短路波导方法，对几种不同的“松密度”混合物测量其介电特性（介电常数和损耗因子）。当已知待测材料的“固体密度”时，利用这些测得特性与混合物“松密度”的线性函数关系进行“外推”，从而获得“固体密度”下的农产品（或矿物）的微波介电特性。 This article presents a new method for determining the microwave dielectric properties of “solid materials” (agricultural products or minerals) that can not be machined. The materials were ground to “air-particle” mixtures and the dielectric properties (dielectric constant and dissipation factor) of several different “bulk” blends were measured using a short-circuit waveguide method. When the “solid density” of the material being measured is known, “extrapolation” is made using these measured properties as a linear function of the “bulk” of the mixture in order to obtain a microwave medium of the agricultural product (or mineral) at “solid density” Electrical characteristics.