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thermoplastic elastomer seal and integral inhalation/exhalation valve ensures greater wearer comfort and acceptance
the human digestive tract from mouth cavity to rectum
Cargill’s 99
this model is made of high-quality PVC
The blades are packed in a box of 100pcs
Electronic Model of Hearing Sense Experiment Kit thermoplastic elastomer seal and integralSize: 490mm x 230mm x 860mm. Human Electronic Model of Hearing Sense Biological Teaching anatomy model. Simulation demonstrates the Hearing Sense. This model shows normal hearing, a few hearing impairment and conduction process. The model is made according to the anatomical principle. The model is a combination of mechanical mechanics and synchronous electronic circuit program control, which can dynamically simulate human hearing sense. Power supply:
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