1、The classification of the wave impedence of rocks as well as the relation between exponential attenuation constants of stress waves and the rock impedence are given.
2、Eddy current testing is to pick up the impedence changes of the coils.
3、As well, comparisons of CPVC and PP on the aspect of properties and chemical impedence data were tabulated.
4、The influence of the impedence mismatching between the joint section in pulse forming line and the helical line on the voltage waveform of the diode was analyzed.
5、Objective To probe the value of pure tone checking, accoustic impedence and checking up tympanic membrane, electro-otoscopy, tympanotomy in diagnosis of SOM.
