At first , the 3 - d theoretical model of photothermal radiation was built in the cylindrical coordinate axes , by reviewing thermally uniaxial materials irradiated by continuously modulated beam 先是考察將熱單軸各向異性材料在連續(xù)調(diào)制光輻照下,在柱坐標(biāo)系下建立光熱輻射測(cè)量( ptr )技術(shù)的三維理論模型。