Objective To evaluate the effectiveness of frequency transpositional hearing aids on hearing and speech rehabilitation for children with profound hearing loss.
The military portable ECG for triage is a kind of minitype monitoring equipment for life information for the purpose that the ambulanceman carry through first aids in frontline.
There were three types of grinding aids with different absorbent membranes: oily membrane grinding aids,aquosity membrane grinding aids and oily-aquosity membrane grinding aids.