提出了一种新的测试技术─—激光干涉层析技术。阐述了这种技术测量任意非轴对称三维瞬变喷雾浓度场与温度场的理论，指出了三维场的测量必须在多个方向上获取全息干涉图这一干涉层析术的特点。提出了一系列独特的全息干涉图的图象处理方法，首次对瞬变喷束两油束交叉区的三维温度与浓度分布进行了实际测量。 A new testing technique, laser interferometry, is proposed. The theory of measuring the concentration field and the temperature field of any non-axisymmetric three-dimensional transient spray is described in this paper. The characteristic of the interferometric tomography that the holographic interferogram must be obtained in many directions is pointed out. A series of unique image processing methods of holographic interferograms are proposed. The three-dimensional temperature and concentration distributions of the two jet bundles of transient jet are measured for the first time.